UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-CSR

CERTIFIED SHAREHOLDER REPORT OF REGISTERED

MANAGEMENT INVESTMENT COMPANIES

Investment Company Act File Number: 811-05986

T. Rowe Price Index Trust, Inc.

(Exact name of registrant as specified in charter)

1307 Point Street, Baltimore, MD 21231

(Address of principal executive offices)

David Oestreicher

1307 Point Street, Baltimore, MD 21231

(Name and address of agent for service)

Registrant’s telephone number, including area code: (410) 345-2000

Date of fiscal year end: December 31

Date of reporting period: June 30, 2026

Item 1. Reports to Shareholders

(a) Report pursuant to Rule 30e-1

Semi-Annual Shareholder Report

June 30, 2026

Mid-Cap Index Fund

Investor Class (TRMNX)

This semi-annual shareholder report contains important information about Mid-Cap Index Fund (the "fund") for the period of January 1, 2026 to June 30, 2026. You can find the fund’s prospectus, financial information on Form N‑CSR (which includes required tax information for dividends), holdings, proxy voting information, and other information atwww.troweprice.com/prospectus. You can also request this information without charge by contacting T. Rowe Price at 1‑800‑638‑5660 or info@troweprice.com or contacting your intermediary.

What were the fund costs for the last six months? (based on a hypothetical $10,000 investment)

Table Summary
	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Mid-Cap Index Fund - Investor Class	$14	0.27%

What are some fund statistics?

Fund Statistics

Table Summary
Total Net Assets (000s)	$503,746
Number of Portfolio Holdings	526

Table Summary

Portfolio Turnover Rate	35.0%

What did the fund invest in?

Sector Allocation (as a % of Net Assets)

Table Summary
Industrials & Business Services	23.6%
Information Technology	20.5
Financials	13.1
Health Care	10.2
Consumer Discretionary	9.3
Communication Services	6.3
Materials	4.8
Real Estate	4.5
Energy	3.4
Other	4.3

Top Ten Holdings (as a % of Net Assets)

Table Summary
Space Exploration Technologies	1.6%
Snowflake	1.5
Bloom Energy	1.4
Cloudflare	1.4
Astera Labs	1.3
Spotify Technology	1.3
Rocket Lab	1.0
Cheniere Energy	0.9
NU Holdings	0.8
Ferguson Enterprises	0.8

If you invest directly with T. Rowe Price, you can elect to receive future shareholder reports or other important documents through electronic delivery by enrolling at www.troweprice.com/paperless. If you invest through a financial intermediary such as an investment advisor, a bank, retirement plan sponsor or a brokerage firm, please contact that organization and ask if it can provide electronic delivery.

Visit www.troweprice.com/en/us/market-data-disclosures for additional legal notices & disclaimers.

202505-4461501

F32-053 8/26

Mid-Cap Index Fund

Investor Class (TRMNX)

T. Rowe Price Investment Services, Inc.

1307 Point Street

Baltimore, Maryland 21231

Semi-Annual Shareholder Report

June 30, 2026

Mid-Cap Index Fund

I Class (TRMSX)

What were the fund costs for the last six months? (based on a hypothetical $10,000 investment)

Table Summary
	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Mid-Cap Index Fund - I Class	$7	0.14%

What are some fund statistics?

Fund Statistics

Table Summary
Total Net Assets (000s)	$503,746
Number of Portfolio Holdings	526

Table Summary

Portfolio Turnover Rate	35.0%

What did the fund invest in?

Sector Allocation (as a % of Net Assets)

Table Summary
Industrials & Business Services	23.6%
Information Technology	20.5
Financials	13.1
Health Care	10.2
Consumer Discretionary	9.3
Communication Services	6.3
Materials	4.8
Real Estate	4.5
Energy	3.4
Other	4.3

Top Ten Holdings (as a % of Net Assets)

Table Summary
Space Exploration Technologies	1.6%
Snowflake	1.5
Bloom Energy	1.4
Cloudflare	1.4
Astera Labs	1.3
Spotify Technology	1.3
Rocket Lab	1.0
Cheniere Energy	0.9
NU Holdings	0.8
Ferguson Enterprises	0.8

Visit www.troweprice.com/en/us/market-data-disclosures for additional legal notices & disclaimers.

202505-4461501

F534-053 8/26

Mid-Cap Index Fund

I Class (TRMSX)

T. Rowe Price Investment Services, Inc.

1307 Point Street

Baltimore, Maryland 21231

Semi-Annual Shareholder Report

June 30, 2026

Mid-Cap Index Fund

Z Class (TRSZX)

What were the fund costs for the last six months? (based on a hypothetical $10,000 investment)

Table Summary
	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Mid-Cap Index Fund - Z Class	$0	0.00%

What are some fund statistics?

Fund Statistics

Table Summary
Total Net Assets (000s)	$503,746
Number of Portfolio Holdings	526

Table Summary

Portfolio Turnover Rate	35.0%

What did the fund invest in?

Sector Allocation (as a % of Net Assets)

Table Summary
Industrials & Business Services	23.6%
Information Technology	20.5
Financials	13.1
Health Care	10.2
Consumer Discretionary	9.3
Communication Services	6.3
Materials	4.8
Real Estate	4.5
Energy	3.4
Other	4.3

Top Ten Holdings (as a % of Net Assets)

Table Summary
Space Exploration Technologies	1.6%
Snowflake	1.5
Bloom Energy	1.4
Cloudflare	1.4
Astera Labs	1.3
Spotify Technology	1.3
Rocket Lab	1.0
Cheniere Energy	0.9
NU Holdings	0.8
Ferguson Enterprises	0.8

Visit www.troweprice.com/en/us/market-data-disclosures for additional legal notices & disclaimers.

202505-4461501

F1261-053 8/26

Mid-Cap Index Fund

Z Class (TRSZX)

T. Rowe Price Investment Services, Inc.

1307 Point Street

Baltimore, Maryland 21231

Item 1. (b) Notice pursuant to Rule 30e-3.

Not applicable.

Item 2. Code of Ethics.

A code of ethics, as defined in Item 2 of Form N-CSR, applicable to its principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions is filed as an exhibit to the registrant’s annual Form N-CSR. No substantive amendments were approved or waivers were granted to this code of ethics during the registrant’s most recent fiscal half-year.

Item 3. Audit Committee Financial Expert.

Disclosure required in registrant’s annual Form N-CSR.

Item 4. Principal Accountant Fees and Services.

Disclosure required in registrant’s annual Form N-CSR.

Item 5. Audit Committee of Listed Registrants.

Not applicable.

Item 6. Investments.

(a) Not applicable. The complete schedule of investments is included in Item 7 of this Form N-CSR.

(b) Not applicable.

Item 7. Financial Statements and Financial Highlights for Open-End Management Investment Companies.

(a – b) Report pursuant to Regulation S-X.

Financial

Highlights

Portfolio

Investments

Financial

Statements

and

Notes

Additional

Fund

Information

June

30,

2026

Financial

Statements

and

Other

Information

For

insights

from

Rowe

Price

investment

professionals,

troweprice.com

ROWE

PRICE

TRMNX

Mid-Cap

Index

Fund

TRMSX

Mid-Cap

Index

Fund–

I Class

TRSZX

Mid-Cap

Index

Fund–

Z Class

ROWE

PRICE

Mid-Cap

Index

Fund

Unaudited

Financial

Highlights

For

outstanding

throughout

each

period

Investor

Class

Months

Ended

6/30/26

Year

Ended

12/31/25

12/31/24

12/31/23

12/31/22

12/31/21

NET

ASSET

VALUE

Beginning

period

.10‌

.84‌

.65‌

.72‌

.55‌

.37‌

Investment

activities

Net

investment

income

(1)(2)

.10‌

.16‌

.15‌

.16‌

.13‌

Net

realized

and

unrealized

gain/

loss

.12‌

.49‌

.37‌

.91‌

(

.74‌

)

.82‌

Total

from

investment

activities

.22‌

.65‌

.52‌

.06‌

(

.58‌

)

.95‌

Distributions

Net

investment

income

—‌

(

.17‌

)

(

.10‌

)

(

.13‌

)

(

.14‌

)

(

.11‌

)

Net

realized

gain

—‌

(

.22‌

)

(

.23‌

)

—‌

(

.11‌

)

(

.66‌

)

Total

distributions

—‌

(

.39‌

)

(

.33‌

)

(

.13‌

)

(

.25‌

)

(

.77‌

)

NET

ASSET

VALUE

End

period

.32‌

.10‌

.84‌

.65‌

.72‌

.55‌

ROWE

PRICE

Mid-Cap

Index

Fund

Unaudited

Financial

Highlights

For

outstanding

throughout

each

period

The

accompanying

notes

are

integral

part

these

financial

statements.

Investor

Class

Months

Ended

6/30/26

Year

Ended

12/31/25

12/31/24

12/31/23

12/31/22

12/31/21

Ratios/Supplemental

Data

Total

return

(2)(3)

.57‌

.54‌

.84‌

.65‌

(

.63‌

)

.69‌

Ratios

average

net

assets:

(2)

Gross

expenses

before

waivers/

payments

Price

Associates

.75‌

(4)

.90‌

.30‌

.35‌

.54‌

.46‌

Net

expenses

after

waivers/

payments

Price

Associates

.27‌

(4)

.27‌

.30‌

Net

investment

income

.85‌

(4)

.74‌

.82‌

.99‌

.00‌

.69‌

Portfolio

turnover

rate

.0‌

.3‌

.7‌

.5‌

.4‌

.7‌

Net

assets,

end

period

(in

thousands)

$125

$109

$103

$214

$166

$237

0‌

(1)

Per

amounts

calculated

using

average

outstanding

method.

(2)

Includes

the

impact

expense-related

arrangements

with

Price

Associates.

(3)

Total

return

reflects

the

rate

that

investor

would

have

earned

investment

the

fund

during

each

period,

assuming

reinvestment

all

distributions,

and

payment

redemption

account

fees,

applicable.

Total

return

not

annualized

for

periods

less

than

one

year.

(4)

Annualized

ROWE

PRICE

Mid-Cap

Index

Fund

Unaudited

Financial

Highlights

For

outstanding

throughout

each

period

Class

Months

Ended

6/30/26

Year

Ended

12/31/25

12/31/24

12/31/23

12/31/22

12/31/21

NET

ASSET

VALUE

Beginning

period

.08‌

.85‌

.70‌

.75‌

.60‌

.42‌

Investment

activities

Net

investment

income

(1)(2)

.11‌

.22‌

.19‌

.17‌

.18‌

Net

realized

and

unrealized

gain/

loss

.13‌

.44‌

.37‌

.93‌

(

.76‌

)

.79‌

Total

from

investment

activities

.24‌

.66‌

.56‌

.10‌

(

.58‌

)

.97‌

Distributions

Net

investment

income

—‌

(

.21‌

)

(

.18‌

)

(

.15‌

)

(

.16‌

)

(

.13‌

)

Net

realized

gain

—‌

(

.22‌

)

(

.23‌

)

—‌

(

.11‌

)

(

.66‌

)

Total

distributions

—‌

(

.43‌

)

(

.41‌

)

(

.15‌

)

(

.27‌

)

(

.79‌

)

NET

ASSET

VALUE

End

period

.32‌

.08‌

.85‌

.70‌

.75‌

.60‌

ROWE

PRICE

Mid-Cap

Index

Fund

Unaudited

Financial

Highlights

For

outstanding

throughout

each

period

The

accompanying

notes

are

integral

part

these

financial

statements.

Class

Months

Ended

6/30/26

Year

Ended

12/31/25

12/31/24

12/31/23

12/31/22

12/31/21

Ratios/Supplemental

Data

Total

return

(2)(3)

.67‌

.57‌

.99‌

.87‌

(

.57‌

)

.77‌

Ratios

average

net

assets:

(2)

Gross

expenses

before

waivers/

payments

Price

Associates

.22‌

(4)

.25‌

.30‌

.40‌

.44‌

.56‌

Net

expenses

after

waivers/

payments

Price

Associates

.14‌

(4)

.14‌

.16‌

Net

investment

income

.98‌

(4)

.00‌

.98‌

.12‌

.15‌

.86‌

Portfolio

turnover

rate

.0‌

.3‌

.7‌

.5‌

.4‌

.7‌

Net

assets,

end

period

(in

thousands)

$183,395

$157,396

$138,433

$114,837

$80,256

$90,604

0‌

(1)

Per

amounts

calculated

using

average

outstanding

method.

(2)

Includes

the

impact

expense-related

arrangements

with

Price

Associates.

(3)

Total

return

reflects

the

rate

that

investor

would

have

earned

investment

the

fund

during

each

period,

assuming

reinvestment

all

distributions,

and

payment

redemption

account

fees,

applicable.

Total

return

not

annualized

for

periods

less

than

one

year.

(4)

Annualized

ROWE

PRICE

Mid-Cap

Index

Fund

Unaudited

Financial

Highlights

For

outstanding

throughout

each

period

Class

Months

Ended

6/30/26

Year

Ended

12/31/25

12/31/24

12/31/23

12/31/22

12/31/21

NET

ASSET

VALUE

Beginning

period

.10‌

.86‌

.71‌

.75‌

.60‌

.41‌

Investment

activities

Net

investment

income

(1)(2)

.13‌

.25‌

.22‌

.20‌

.21‌

.22‌

Net

realized

and

unrealized

gain/

loss

.13‌

.45‌

.37‌

.93‌

(

.77‌

)

.79‌

Total

from

investment

activities

.26‌

.70‌

.59‌

.13‌

(

.56‌

)

.01‌

Distributions

Net

investment

income

—‌

(

.24‌

)

(

.21‌

)

(

.17‌

)

(

.18‌

)

(

.16‌

)

Net

realized

gain

—‌

(

.22‌

)

(

.23‌

)

—‌

(

.11‌

)

(

.66‌

)

Total

distributions

—‌

(

.46‌

)

(

.44‌

)

(

.17‌

)

(

.29‌

)

(

.82‌

)

NET

ASSET

VALUE

End

period

.36‌

.10‌

.86‌

.71‌

.75‌

.60‌

ROWE

PRICE

Mid-Cap

Index

Fund

Unaudited

Financial

Highlights

For

outstanding

throughout

each

period

The

accompanying

notes

are

integral

part

these

financial

statements.

Class

Months

Ended

6/30/26

Year

Ended

12/31/25

12/31/24

12/31/23

12/31/22

12/31/21

Ratios/Supplemental

Data

Total

return

(2)(3)

.75‌

.12‌

.09‌

(

.47‌

)

.00‌

Ratios

average

net

assets:

(2)

Gross

expenses

before

waivers/

payments

Price

Associates

.18‌

(4)

.21‌

.25‌

.32‌

.40‌

.60‌

Net

expenses

after

waivers/

payments

Price

Associates

.00‌

(4)

.00‌

.01‌

Net

investment

income

.15‌

(4)

.16‌

.15‌

.31‌

.37‌

.09‌

Portfolio

turnover

rate

.0‌

.3‌

.7‌

.5‌

.4‌

.7‌

Net

assets,

end

period

(in

thousands)

$320,226

$189,960

$96,405

$37,136

$11,404

$1,132

0‌

(1)

Per

amounts

calculated

using

average

outstanding

method.

(2)

Includes

the

impact

expense-related

arrangements

with

Price

Associates.

(3)

Total

return

reflects

the

rate

that

investor

would

have

earned

investment

the

fund

during

each

period,

assuming

reinvestment

all

distributions,

and

payment

redemption

account

fees,

applicable.

Total

return

not

annualized

for

periods

less

than

one

year.

(4)

Annualized

ROWE

PRICE

Mid-Cap

Index

Fund

June

30,

2026

Unaudited

Portfolio

Investments

‡

Value

(Cost

and

value

$000s)

‡

COMMON

STOCKS

99.7%

COMMUNICATION

SERVICES

6.3%

Diversified

Telecommunication

Services

2.2%

AST

SpaceMobile (1)(2)

22,797‌

2,026‌

Globalstar (1)

4,587‌

373‌

Iridium

Communications

8,270‌

454‌

Liberty

Global,

Class

A (1)

14,822‌

168‌

Liberty

Global,

Class

C (1)

11,336‌

125‌

Space

Exploration

Technologies,

Class

A (1)

47,123‌

8,051‌

11,197‌

Entertainment

2.7%

Liberty

Media

Corp-Liberty

Formula

One,

Class

A (1)

2,074‌

181‌

Liberty

Media

Corp-Liberty

Formula

One,

Class

C (1)

19,348‌

1,841‌

Madison

Square

Garden

Sports (1)

1,443‌

580‌

ROBLOX,

Class

A (1)

56,564‌

3,076‌

Roku (1)

11,627‌

1,606‌

Spotify

Technology (1)

14,068‌

6,459‌

13,743‌

Interactive

Media

Services

0.8%

Match

Group

20,597‌

784‌

People (1)

5,575‌

257‌

Pinterest,

Class

A (1)

43,414‌

913‌

Reddit,

Class

A (1)

11,882‌

2,062‌

4,016‌

Media

0.5%

Liberty

Broadband,

Class

A (1)

1,495‌

50‌

Liberty

Broadband,

Class

C (1)

10,196‌

339‌

New

York

Times,

Class

13,649‌

955‌

Nexstar

Media

Group

2,574‌

460‌

NIQ

Global

Intelligence (1)(2)

5,182‌

48‌

Sirius

Holdings

15,983‌

472‌

Versant

Media

Group

12,742‌

459‌

2,783‌

Wireless

Telecommunication

Services

0.1%

Millicom

International

Cellular

8,015‌

727‌

Total

Communication

Services

32,466‌

CONSUMER

DISCRETIONARY

9.3%

Automobile

Components

0.5%

BorgWarner

18,243‌

1,211‌

ROWE

PRICE

Mid-Cap

Index

Fund

Value

(Cost

and

value

$000s)

‡

Gentex

19,180‌

485‌

Lear

4,477‌

600‌

QuantumScape (1)(2)

43,994‌

333‌

2,629‌

Automobiles

0.3%

Rivian

Automotive,

Class

A (1)

74,901‌

1,300‌

Thor

Industries (2)

4,418‌

332‌

1,632‌

Broadline

Retail

0.7%

Coupang (1)

110,968‌

1,928‌

Dillard's,

Class

A (2)

281‌

148‌

Etsy (1)

8,310‌

626‌

Macy's

23,358‌

550‌

Ollie's

Bargain

Outlet

Holdings (1)

5,397‌

415‌

3,667‌

Distributors

0.2%

LKQ

22,514‌

593‌

Pool

2,851‌

612‌

1,205‌

Diversified

Consumer

Services

0.7%

ADT

49,350‌

321‌

Bright

Horizons

Family

Solutions (1)

4,603‌

326‌

Duolingo (1)

3,477‌

400‌

Grand

Canyon

Education (1)

2,278‌

326‌

H&R

Block

11,337‌

432‌

Liberty

Live

Holdings,

Class

A (1)

1,719‌

174‌

Liberty

Live

Holdings,

Class

C (1)

4,295‌

454‌

Service

Corp.

International

11,889‌

903‌

3,336‌

Hotels,

Restaurants

Leisure

2.9%

Aramark

23,326‌

1,327‌

Boyd

Gaming

4,612‌

407‌

Caesars

Entertainment (1)

18,166‌

548‌

Cava

Group (1)

8,902‌

699‌

Choice

Hotels

International (2)

2,446‌

270‌

Churchill

Downs

5,914‌

530‌

DraftKings,

Class

A (1)

42,269‌

1,068‌

Dutch

Bros,

Class

A (1)

10,403‌

747‌

Flutter

Entertainment (1)

12,613‌

1,289‌

Hyatt

Hotels,

Class

A (2)

3,517‌

682‌

Planet

Fitness,

Class

A (1)

6,942‌

362‌

ROWE

PRICE

Mid-Cap

Index

Fund

Value

(Cost

and

value

$000s)

‡

Restaurant

Brands

International (2)

30,542‌

2,215‌

Texas

Roadhouse

5,852‌

1,131‌

Travel

Leisure

5,354‌

409‌

Vail

Resorts (2)

3,164‌

431‌

Viking

Holdings (1)

15,772‌

1,651‌

Wingstop

2,412‌

418‌

Wyndham

Hotels

Resorts

6,584‌

554‌

14,738‌

Household

Durables

1.1%

Mohawk

Industries (1)

4,506‌

547‌

SharkNinja (1)

7,421‌

1,130‌

Somnigroup

International

18,128‌

1,421‌

Toll

Brothers

8,394‌

1,383‌

TopBuild (1)(2)

2,485‌

881‌

Whirlpool (2)

5,516‌

217‌

5,579‌

Leisure

Products

0.2%

Brunswick

5,820‌

490‌

Mattel (1)

25,346‌

352‌

YETI

Holdings (1)

6,615‌

328‌

1,170‌

Specialty

Retail

2.1%

AutoNation (1)

2,224‌

413‌

Bath

Body

Works

18,166‌

420‌

Burlington

Stores (1)

5,578‌

1,767‌

CarMax (1)

12,547‌

664‌

Chewy,

Class

A (1)

20,784‌

408‌

Dick's

Sporting

Goods (2)

5,625‌

1,276‌

Five

Below (1)

4,812‌

865‌

Floor

Decor

Holdings,

Class

A (1)

9,577‌

568‌

GameStop,

Class

A (1)

36,316‌

802‌

Gap

20,102‌

375‌

Lithia

Motors (2)

1,991‌

578‌

Murphy

USA

1,482‌

799‌

Penske

Automotive

Group

1,552‌

278‌

Valvoline (1)

11,478‌

454‌

Wayfair,

Class

A (1)

9,226‌

853‌

10,520‌

Textiles,

Apparel

Luxury

Goods

0.6%

Amer

Sports (1)

16,279‌

551‌

Birkenstock

Holding (1)(2)

3,528‌

152‌

Columbia

Sportswear

1,887‌

116‌

ROWE

PRICE

Mid-Cap

Index

Fund

Value

(Cost

and

value

$000s)

‡

Crocs (1)

4,350‌

525‌

Holding,

Class

A (1)

20,043‌

710‌

PVH

3,983‌

296‌

31,603‌

527‌

2,877‌

Total

Consumer

Discretionary

47,353‌

CONSUMER

STAPLES

2.5%

Beverages

0.4%

Celsius

Holdings (1)

15,371‌

450‌

Coca-Cola

Consolidated

5,023‌

959‌

Primo

Brands

21,959‌

537‌

1,946‌

Consumer

Staples

Distribution

Retail

1.2%

Albertsons,

Class

29,990‌

406‌

BJ's

Wholesale

Club

Holdings (1)

11,443‌

998‌

Maplebear (1)

13,579‌

643‌

Performance

Food

Group (1)

13,396‌

1,497‌

Sprouts

Farmers

Market (1)

8,299‌

702‌

U.S.

Foods

Holding (1)

19,528‌

1,997‌

6,243‌

Food

Products

0.8%

Campbell's

Company (2)

17,660‌

393‌

Conagra

Brands

42,108‌

567‌

Darling

Ingredients (1)

13,881‌

758‌

Freshpet (1)

4,251‌

251‌

Ingredion

5,631‌

533‌

JBS,

Class

28,652‌

340‌

Lamb

Weston

Holdings

11,872‌

513‌

Pilgrim's

Pride

3,726‌

105‌

Post

Holdings (1)

3,569‌

315‌

Seaboard

22‌

98‌

Smithfield

Foods

4,043‌

98‌

3,971‌

Household

Products

0.0%

Reynolds

Consumer

Products

4,795‌

129‌

Personal

Care

Products

0.1%

elf

Beauty (1)

5,071‌

375‌

Total

Consumer

Staples

12,664‌

ROWE

PRICE

Mid-Cap

Index

Fund

Value

(Cost

and

value

$000s)

‡

ENERGY

3.4%

Energy

Equipment

Services

0.7%

NOV

31,663‌

587‌

TechnipFMC

35,183‌

2,333‌

Weatherford

International

6,353‌

518‌

3,438‌

Oil,

Gas

Consumable

Fuels

2.7%

Antero

Midstream

29,259‌

666‌

Antero

Resources (1)

26,310‌

924‌

Cheniere

Energy

18,641‌

4,455‌

Chord

Energy

4,992‌

570‌

Midstream

9,056‌

1,329‌

Sinclair

13,720‌

956‌

Matador

Resources

10,395‌

517‌

Ovintiv

25,179‌

1,326‌

Permian

Resources,

Class

70,347‌

1,295‌

Range

Resources

20,673‌

769‌

Viper

Energy,

Class

16,789‌

712‌

13,519‌

Total

Energy

16,957‌

FINANCIALS

13.1%

Banks

3.9%

Bank

OZK

9,263‌

483‌

BOK

Financial (2)

1,657‌

230‌

Central

BanCo

1,716‌

52‌

Columbia

Banking

System

25,560‌

819‌

Commerce

Bancshares

12,004‌

693‌

Cullen/Frost

Bankers

5,234‌

809‌

East

West

Bancorp

12,109‌

1,563‌

First

Citizens

BancShares,

Class

713‌

1,484‌

First

Hawaiian

10,624‌

311‌

First

Horizon

41,982‌

1,076‌

FNB

31,133‌

594‌

Holdings,

Class

A (1)

308,840‌

4,126‌

Pinnacle

Financial

Partners

13,292‌

1,341‌

Popular

5,652‌

928‌

Prosperity

Bancshares

8,656‌

632‌

SOUTHSTATE

BANK

8,596‌

859‌

TFS

Financial (2)

4,597‌

82‌

Webster

Financial

14,293‌

1,092‌

Western

Alliance

Bancorp

9,387‌

772‌

Wintrust

Financial

5,882‌

945‌

ROWE

PRICE

Mid-Cap

Index

Fund

Value

(Cost

and

value

$000s)

‡

Zions

Bancorp

12,861‌

890‌

19,781‌

Capital

Markets

2.9%

Affiliated

Managers

Group

2,263‌

766‌

Blue

Owl

Capital (2)

59,297‌

519‌

Brookfield

Asset

Management,

Class

33,736‌

1,513‌

Bullish (1)(2)

1,820‌

43‌

Carlyle

Group

23,527‌

991‌

Evercore,

Class

3,253‌

1,111‌

Freedom

Holding (1)(2)

1,586‌

207‌

Galaxy

Digital,

Class

A (1)

16,840‌

460‌

Hamilton

Lane,

Class

3,457‌

272‌

Houlihan

Lokey

4,833‌

648‌

Jefferies

Financial

Group

13,442‌

672‌

Lazard

8,196‌

344‌

LPL

Financial

Holdings

7,129‌

2,008‌

MarketAxess

Holdings

3,070‌

348‌

Morningstar

1,710‌

267‌

SEI

Investments

9,017‌

791‌

Stifel

Financial

13,215‌

922‌

TPG

13,068‌

530‌

Tradeweb

Markets,

Class

10,282‌

1,025‌

Virtu

Financial,

Class

7,459‌

444‌

XP,

Class

35,309‌

574‌

14,455‌

Consumer

Finance

0.9%

Ally

Financial

24,638‌

1,132‌

Credit

Acceptance (1)(2)

317‌

202‌

Figure

Technology

Solutions,

Class

A (1)

12,597‌

387‌

OneMain

Holdings

10,233‌

624‌

SLM

16,831‌

436‌

SoFi

Technologies (1)(2)

112,424‌

2,016‌

4,797‌

Financial

Services

1.8%

Affirm

Holdings (1)

24,944‌

2,034‌

Chime

Financial,

Class

A (1)

23,423‌

480‌

Corebridge

Financial

21,827‌

625‌

Equitable

Holdings

24,801‌

1,088‌

Euronet

Worldwide (1)

3,099‌

227‌

MGIC

Investment

18,698‌

527‌

Rocket,

Class

A (1)

86,278‌

1,359‌

Shift4

Payments,

Class

A (1)(2)

4,928‌

240‌

ROWE

PRICE

Mid-Cap

Index

Fund

Value

(Cost

and

value

$000s)

‡

Toast,

Class

A (1)

42,444‌

1,181‌

UWM

Holdings (2)

24,366‌

56‌

Voya

Financial

8,178‌

740‌

Western

Union (2)

27,258‌

210‌

WEX (1)

3,090‌

436‌

9,203‌

Insurance

2.9%

American

Financial

Group

5,875‌

822‌

Assured

Guaranty

3,670‌

294‌

Axis

Capital

Holdings

6,496‌

698‌

Brighthouse

Financial (1)

4,988‌

316‌

CNA

Financial (2)

1,756‌

85‌

Fidelity

National

Financial

22,555‌

1,064‌

First

American

Financial

8,648‌

593‌

Hanover

Insurance

Group

3,081‌

660‌

Kinsale

Capital

Group

1,937‌

639‌

Lincoln

National

15,448‌

546‌

Markel

Group (1)

1,101‌

2,150‌

Old

Republic

International

19,980‌

818‌

Primerica

2,774‌

788‌

Reinsurance

Group

America

5,830‌

1,240‌

RenaissanceRe

Holdings

3,717‌

1,178‌

RLI

7,394‌

437‌

Ryan

Specialty

Holdings (2)

9,894‌

374‌

Unum

Group

14,106‌

1,261‌

White

Mountains

Insurance

Group

212‌

439‌

14,402‌

Mortgage

Real

Estate

Investment

Trusts

0.7%

AGNC

Investment,

REIT (2)

101,568‌

1,107‌

Annaly

Capital

Management,

REIT

65,347‌

1,461‌

Rithm

Capital,

REIT

50,147‌

471‌

Starwood

Property

Trust,

REIT

31,471‌

516‌

3,555‌

Total

Financials

66,193‌

HEALTH

CARE

10.2%

Biotechnology

5.2%

Alnylam

Pharmaceuticals (1)

11,856‌

3,569‌

Arrowhead

Pharmaceuticals (1)

11,976‌

976‌

Ascendis

Pharma (1)

4,434‌

1,182‌

BioMarin

Pharmaceutical (1)

16,999‌

973‌

Bridgebio

Pharma (1)

14,988‌

1,116‌

Caris

Life

Sciences (1)

10,830‌

193‌

ROWE

PRICE

Mid-Cap

Index

Fund

Value

(Cost

and

value

$000s)

‡

Exelixis (1)

22,200‌

1,208‌

Halozyme

Therapeutics (1)

10,415‌

815‌

Insmed (1)

19,104‌

2,037‌

Ionis

Pharmaceuticals (1)

14,640‌

1,161‌

Madrigal

Pharmaceuticals (1)

1,587‌

852‌

Natera (1)

12,149‌

3,298‌

Neurocrine

Biosciences (1)

8,816‌

1,486‌

Revolution

Medicines (1)

17,038‌

3,191‌

Roivant

Sciences (1)

43,577‌

1,542‌

Summit

Therapeutics (1)(2)

11,924‌

174‌

United

Therapeutics (1)

3,687‌

1,998‌

Viking

Therapeutics (1)

10,075‌

393‌

26,164‌

Health

Care

Equipment

Supplies

0.9%

Envista

Holdings (1)

14,420‌

380‌

Globus

Medical,

Class

A (1)

9,939‌

785‌

Medline,

Class

A (1)

39,953‌

1,576‌

Penumbra (1)

3,375‌

1,066‌

Teleflex

3,976‌

504‌

4,311‌

Health

Care

Providers

Services

1.3%

Chemed

1,155‌

538‌

Encompass

Health

8,724‌

882‌

Ensign

Group

5,010‌

803‌

Guardant

Health (1)

11,336‌

1,701‌

Molina

Healthcare (1)

4,562‌

1,043‌

Tenet

Healthcare (1)

7,606‌

1,423‌

6,390‌

Health

Care

Technology

0.0%

Doximity,

Class

A (1)

11,433‌

237‌

Life

Sciences

Tools

Services

1.5%

Avantor (1)

58,438‌

578‌

Bio-Rad

Laboratories,

Class

A (1)

1,636‌

480‌

Bruker

9,833‌

592‌

Illumina (1)

13,531‌

2,379‌

Medpace

Holdings (1)

2,045‌

1,083‌

QIAGEN

18,228‌

713‌

Repligen (1)

4,719‌

644‌

Sotera

Health (1)

25,214‌

448‌

Tempus

AI,

Class

A (1)(2)

9,672‌

560‌

7,477‌

ROWE

PRICE

Mid-Cap

Index

Fund

Value

(Cost

and

value

$000s)

‡

Pharmaceuticals

1.3%

Axsome

Therapeutics (1)

3,824‌

936‌

Corcept

Therapeutics (1)

8,408‌

731‌

Elanco

Animal

Health (1)

43,805‌

1,078‌

Jazz

Pharmaceuticals (1)

5,311‌

1,280‌

Organon

22,997‌

311‌

Royalty

Pharma,

Class

36,847‌

2,066‌

6,402‌

Total

Health

Care

50,981‌

INDUSTRIALS

BUSINESS

SERVICES

23.6%

Aerospace

Defense

5.0%

AeroVironment (1)

3,435‌

567‌

ATI (1)

12,053‌

2,376‌

BWX

Technologies

8,148‌

1,586‌

Carpenter

Technology

4,298‌

2,651‌

Curtiss-Wright

3,281‌

2,486‌

FTAI

Aviation

9,033‌

2,444‌

HEICO

3,794‌

1,351‌

HEICO,

Class

6,712‌

1,731‌

Hexcel

6,637‌

664‌

Karman

Holdings (1)(2)

6,009‌

300‌

Kratos

Defense

Security

Solutions (1)

16,399‌

818‌

Leonardo

DRS

6,639‌

283‌

Loar

Holdings (1)(2)

3,870‌

312‌

Rocket

Lab (1)

47,838‌

4,863‌

StandardAero (1)

20,240‌

605‌

Woodward

5,285‌

2,249‌

25,286‌

Air

Freight

Logistics

0.1%

GXO

Logistics (1)

10,281‌

521‌

Building

Products

1.7%

AAON

6,041‌

766‌

Advanced

Drainage

Systems

6,445‌

1,012‌

Armstrong

World

Industries

3,749‌

601‌

Carlisle

3,570‌

1,295‌

Fortune

Brands

Innovations

10,453‌

574‌

Hayward

Holdings (1)

18,285‌

317‌

Louisiana-Pacific

5,719‌

450‌

Modine

Manufacturing (1)

4,629‌

1,236‌

Owens

Corning

7,095‌

1,128‌

Simpson

Manufacturing

3,647‌

763‌

ROWE

PRICE

Mid-Cap

Index

Fund

Value

(Cost

and

value

$000s)

‡

Trex (1)

9,299‌

465‌

8,607‌

Commercial

Services

Supplies

1.1%

Clean

Harbors (1)

4,521‌

1,351‌

GFL

Environmental

23,057‌

848‌

MSA

Safety

3,273‌

571‌

Global (2)

16,560‌

1,929‌

Tetra

Tech

23,049‌

666‌

5,365‌

Construction

Engineering

2.3%

AECOM

11,428‌

798‌

API

Group (1)

33,957‌

1,438‌

Dycom

Industries (1)

2,644‌

1,337‌

Everus

Construction

Group (1)

4,515‌

749‌

IES

Holdings (1)

773‌

568‌

MasTec (1)

5,522‌

2,297‌

Primoris

Services

4,848‌

480‌

Solv

Energy,

Class

A (1)

3,397‌

116‌

Sterling

Infrastructure (1)

2,676‌

2,246‌

Valmont

Industries

1,679‌

970‌

WillScot

Holdings (2)

15,931‌

460‌

11,459‌

Electrical

Equipment

3.3%

Acuity

2,681‌

1,010‌

Bloom

Energy,

Class

A (1)

23,905‌

7,236‌

Forgent

Power

Solutions,

Class

A (1)

11,329‌

633‌

Nextpower,

Class

A (1)

13,181‌

1,570‌

nVent

Electric

14,310‌

2,427‌

Powell

Industries

2,561‌

733‌

Regal

Rexnord

5,907‌

1,407‌

Sensata

Technologies

Holding

12,815‌

612‌

Vicor (1)

2,184‌

830‌

X-Energy (1)(2)

3,702‌

68‌

16,526‌

Ground

Transportation

1.4%

Avis

Budget

Group (1)(2)

1,528‌

226‌

Knight-Swift

Transportation

Holdings

14,015‌

1,091‌

Landstar

System

2,992‌

619‌

Lyft,

Class

A (1)

34,029‌

497‌

Ryder

System

3,326‌

877‌

Saia (1)

2,365‌

996‌

Schneider

National,

Class

4,694‌

172‌

ROWE

PRICE

Mid-Cap

Index

Fund

Value

(Cost

and

value

$000s)

‡

U-Haul

Holding (1)

681‌

45‌

U-Haul

Holding,

Non-Voting

9,007‌

520‌

XPO (1)

10,148‌

2,083‌

7,126‌

Machinery

3.8%

AGCO

5,305‌

635‌

Allison

Transmission

Holdings

7,332‌

827‌

Chart

Industries (1)

4,229‌

884‌

CNH

Industrial

77,201‌

867‌

Crane (2)

4,388‌

979‌

Donaldson

10,228‌

918‌

Esab

5,140‌

507‌

Flowserve

11,289‌

837‌

Gates

Industrial (1)

22,155‌

620‌

Graco

14,630‌

1,106‌

ITT

7,940‌

1,570‌

Lincoln

Electric

Holdings

4,743‌

1,259‌

Middleby (1)

3,841‌

661‌

Mueller

Industries

9,663‌

1,188‌

Oshkosh

5,522‌

847‌

RBC

Bearings (1)

2,776‌

1,788‌

SPX

Technologies (1)

4,311‌

1,057‌

Timken

5,707‌

829‌

Toro

8,469‌

825‌

Watts

Water

Technologies,

Class

2,415‌

945‌

19,149‌

Marine

Transportation

0.1%

Kirby (1)

4,725‌

642‌

Passenger

Airlines

0.3%

Alaska

Air

Group (1)

9,982‌

521‌

American

Airlines

Group (1)

57,846‌

1,045‌

1,566‌

Professional

Services

1.8%

Amentum

Holdings (1)

13,400‌

277‌

Booz

Allen

Hamilton

Holding

10,608‌

644‌

CACI

International,

Class

A (1)

1,939‌

898‌

ExlService

Holdings (1)

13,004‌

336‌

FTI

Consulting (1)

2,683‌

400‌

Genpact

13,821‌

380‌

KBR

11,022‌

381‌

Parsons (1)

3,252‌

170‌

ROWE

PRICE

Mid-Cap

Index

Fund

Value

(Cost

and

value

$000s)

‡

Paycom

Software

3,692‌

464‌

Paylocity

Holding (1)

3,926‌

410‌

Planet

Labs (1)

24,737‌

820‌

Robert

Half

8,666‌

266‌

Science

Applications

International

3,872‌

428‌

SS&C

Technologies

Holdings

18,471‌

1,146‌

TransUnion

17,145‌

1,237‌

Solutions,

Class

6,805‌

693‌

8,950‌

Trading

Companies

Distributors

2.7%

Applied

Industrial

Technologies

3,259‌

1,102‌

Core

Main,

Class

A (1)

16,616‌

802‌

Ferguson

Enterprises

17,042‌

4,045‌

MSC

Industrial

Direct,

Class

4,083‌

486‌

QXO (1)(2)

57,510‌

994‌

SiteOne

Landscape

Supply (1)

3,931‌

450‌

Sunbelt

Rentals

Holdings

36,535‌

2,733‌

Watsco (2)

3,111‌

1,296‌

WESCO

International

4,260‌

1,471‌

13,379‌

Total

Industrials

Business

Services

118,576‌

INFORMATION

TECHNOLOGY

20.5%

Communications

Equipment

0.4%

Applied

Optoelectronics (1)

6,841‌

1,014‌

Ubiquiti

373‌

199‌

Viavi

Solutions (1)

20,501‌

979‌

2,192‌

Electronic

Equipment,

Instruments

Components

2.5%

Advanced

Energy

Industries

3,360‌

1,253‌

Arrow

Electronics (1)

4,512‌

963‌

Avnet

7,193‌

639‌

Cognex

14,791‌

1,071‌

Fabrinet (1)

3,189‌

1,792‌

Ingram

Micro

Holding

3,861‌

106‌

IPG

Photonics (1)

2,255‌

265‌

Littelfuse

2,204‌

1,004‌

Ralliant

9,928‌

731‌

Sanmina (1)

4,498‌

1,138‌

SYNNEX

6,817‌

1,822‌

TTM

Technologies (1)

9,074‌

1,697‌

Vontier

12,313‌

357‌

12,838‌

ROWE

PRICE

Mid-Cap

Index

Fund

Value

(Cost

and

value

$000s)

‡

Services

5.5%

Amdocs

9,526‌

481‌

Applied

Digital (1)

22,583‌

842‌

Cloudflare,

Class

A (1)

28,146‌

6,904‌

CoreWeave,

Class

A (1)

30,978‌

3,084‌

DigitalOcean

Holdings (1)

7,188‌

1,129‌

EPAM

Systems (1)

4,472‌

355‌

Kyndryl

Holdings (1)

19,547‌

221‌

MongoDB (1)

6,941‌

2,331‌

Okta (1)

15,008‌

2,048‌

Snowflake (1)

29,830‌

7,592‌

Twilio,

Class

A (1)

13,169‌

2,717‌

27,704‌

Semiconductors

Semiconductor

Equipment

6.3%

Allegro

MicroSystems (1)(2)

10,994‌

765‌

Amkor

Technology

11,054‌

953‌

Astera

Labs (1)

13,635‌

6,586‌

Cirrus

Logic (1)

4,505‌

669‌

Credo

Technology

Group

Holding (1)

14,671‌

3,990‌

Enphase

Energy (1)

11,524‌

567‌

Entegris

13,537‌

2,435‌

FormFactor (1)

6,879‌

1,100‌

GLOBALFOUNDRIES

11,182‌

922‌

Lattice

Semiconductor (1)

12,130‌

1,855‌

MACOM

Technology

Solutions

Holdings (1)

5,959‌

2,267‌

MKS

5,973‌

2,657‌

Onto

Innovation (1)

4,412‌

1,670‌

Qorvo (1)

7,471‌

697‌

Rambus (1)

9,574‌

1,271‌

Semtech (1)

8,254‌

1,336‌

SiTime (1)

1,979‌

1,475‌

Universal

Display

3,781‌

327‌

31,542‌

Software

5.0%

Appfolio,

Class

A (1)

2,004‌

321‌

Atlassian,

Class

A (1)

15,037‌

1,170‌

Aurora

Innovation (1)

106,785‌

728‌

Bentley

Systems,

Class

B (2)

14,732‌

440‌

BILL

Holdings (1)

7,618‌

275‌

BitMine

Immersion

Technologies

49,976‌

665‌

CCC

Intelligent

Solutions

Holdings (1)

48,151‌

248‌

Circle

Internet

Group (1)

15,927‌

998‌

ROWE

PRICE

Mid-Cap

Index

Fund

Value

(Cost

and

value

$000s)

‡

Docusign (1)

17,169‌

763‌

Dolby

Laboratories,

Class

A (2)

5,226‌

275‌

Dropbox,

Class

A (1)

13,357‌

367‌

Dynatrace (1)

26,363‌

1,158‌

Elastic (1)

8,199‌

468‌

Figma,

Class

A (1)

18,724‌

339‌

Gitlab,

Class

A (1)

12,697‌

388‌

Guidewire

Software (1)

7,493‌

922‌

HubSpot (1)

4,401‌

803‌

IREN (1)

28,766‌

1,315‌

Klaviyo,

Class

A (1)

12,211‌

184‌

Manhattan

Associates (1)

5,184‌

722‌

Nutanix,

Class

A (1)

23,069‌

1,176‌

Pegasystems

7,797‌

234‌

Procore

Technologies (1)

11,002‌

447‌

RingCentral,

Class

6,464‌

252‌

Rubrik,

Class

A (1)

13,741‌

1,103‌

SailPoint (1)(2)

6,161‌

90‌

Samsara,

Class

A (1)

30,470‌

988‌

SentinelOne,

Class

A (1)

28,896‌

490‌

Strategy (1)

29,148‌

2,534‌

Terawulf (1)

32,049‌

792‌

UiPath,

Class

A (1)(2)

35,046‌

381‌

Unity

Software (1)

31,961‌

913‌

Zoom

Communications (1)

23,681‌

2,044‌

Zscaler (1)

9,304‌

1,313‌

25,306‌

Technology

Hardware,

Storage

Peripherals

0.8%

Everpure,

Class

A (1)

27,780‌

2,189‌

IonQ (1)(2)

32,682‌

1,740‌

3,929‌

Total

Information

Technology

103,511‌

MATERIALS

4.8%

Chemicals

1.3%

Axalta

Coating

Systems (1)

18,928‌

648‌

Celanese

10,072‌

463‌

Eastman

Chemical

10,064‌

674‌

Element

Solutions

20,235‌

966‌

NewMarket

547‌

433‌

Olin

9,978‌

198‌

RPM

International

11,238‌

1,249‌

Scotts

Miracle-Gro

3,902‌

266‌

ROWE

PRICE

Mid-Cap

Index

Fund

Value

(Cost

and

value

$000s)

‡

Solstice

Advanced

Materials

14,171‌

1,256‌

Westlake

2,895‌

211‌

6,364‌

Construction

Materials

0.2%

Eagle

Materials

2,761‌

621‌

James

Hardie

Industries (1)(2)

13,112‌

343‌

964‌

Containers

Packaging

0.6%

AptarGroup

5,619‌

703‌

Crown

Holdings

9,882‌

1,105‌

Graphic

Packaging

Holding

25,655‌

271‌

Silgan

Holdings (2)

7,774‌

361‌

Sonoco

Products

8,830‌

498‌

2,938‌

Metals

Mining

2.7%

Alcoa

23,440‌

1,222‌

Almonty

Industries (1)

19,064‌

316‌

Anglogold

Ashanti

44,993‌

3,640‌

Aura

Minerals

3,566‌

224‌

Cleveland-Cliffs (1)

50,982‌

479‌

Coeur

Mining

91,495‌

1,493‌

Hecla

Mining

56,060‌

865‌

Materials (1)(2)

12,717‌

712‌

Reliance

4,536‌

1,695‌

Royal

Gold

7,552‌

1,507‌

Southern

Copper

8,199‌

1,429‌

13,582‌

Total

Materials

23,848‌

REAL

ESTATE

4.5%

Diversified

Real

Estate

Investment

Trusts

0.3%

Carey,

REIT

19,684‌

1,407‌

Health

Care

Real

Estate

Investment

Trusts

0.6%

American

Healthcare

REIT,

REIT

16,923‌

882‌

Healthcare

Realty

Trust,

REIT

29,692‌

599‌

Janus

Living,

Class

A-1,

REIT

4,068‌

117‌

Medical

Properties

Trust,

REIT (2)

43,722‌

202‌

Omega

Healthcare

Investors,

REIT

26,534‌

1,265‌

3,065‌

Industrial

Real

Estate

Investment

Trusts

0.7%

Americold

Realty

Trust,

REIT

25,817‌

406‌

ROWE

PRICE

Mid-Cap

Index

Fund

Value

(Cost

and

value

$000s)

‡

EastGroup

Properties,

REIT

4,729‌

958‌

First

Industrial

Realty

Trust,

REIT

11,692‌

717‌

Lineage,

REIT

6,098‌

264‌

Rexford

Industrial

Realty,

REIT

19,975‌

669‌

STAG

Industrial,

REIT

16,965‌

645‌

3,659‌

Office

Real

Estate

Investment

Trusts

0.3%

Cousins

Properties,

REIT

14,725‌

442‌

Kilroy

Realty,

REIT

10,274‌

385‌

Vornado

Realty

Trust,

REIT

15,527‌

610‌

1,437‌

Real

Estate

Management

Development

0.4%

Howard

Hughes

Holdings (1)

2,731‌

195‌

Jones

Lang

LaSalle (1)

4,101‌

1,271‌

Zillow

Group,

Class

A (1)

3,506‌

110‌

Zillow

Group,

Class

C (1)

14,402‌

454‌

2,030‌

Residential

Real

Estate

Investment

Trusts

0.7%

American

Homes

Rent,

Class

REIT

29,728‌

997‌

Equity

LifeStyle

Properties,

REIT

17,103‌

1,102‌

Sun

Communities,

REIT

10,868‌

1,303‌

3,402‌

Retail

Real

Estate

Investment

Trusts

0.5%

Agree

Realty,

REIT (2)

10,482‌

794‌

Brixmor

Property

Group,

REIT

27,021‌

852‌

NNN

REIT,

REIT

16,764‌

780‌

2,426‌

Specialized

Real

Estate

Investment

Trusts

1.0%

CubeSmart,

REIT

20,055‌

798‌

EPR

Properties,

REIT

6,662‌

387‌

Fermi (1)

18,034‌

165‌

Gaming

Leisure

Properties,

REIT

24,121‌

1,074‌

Lamar

Advertising,

Class

REIT

7,598‌

1,185‌

Millrose

Properties,

REIT

13,823‌

415‌

National

Storage

Affiliates

Trust,

REIT (2)

6,257‌

278‌

Rayonier,

REIT

26,577‌

566‌

4,868‌

Total

Real

Estate

22,294‌

UTILITIES

1.5%

Electric

Utilities

0.5%

IDACORP (2)

4,909‌

743‌

ROWE

PRICE

Mid-Cap

Index

Fund

Value

(Cost

and

value

$000s)

‡

OGE

Energy

18,250‌

888‌

Oklo (1)(2)

12,461‌

652‌

2,283‌

Gas

Utilities

0.3%

MDU

Resources

Group

18,188‌

386‌

National

Fuel

Gas

8,336‌

643‌

UGI

19,050‌

658‌

1,687‌

Independent

Power

Renewable

Electricity

Producers

0.5%

Brookfield

Renewable

12,221‌

454‌

Clearway

Energy,

Class

10,573‌

361‌

Talen

Energy (1)

4,012‌

1,542‌

2,357‌

Water

Utilities

0.2%

Essential

Utilities

25,107‌

962‌

Total

Utilities

7,289‌

Total

Common

Stocks

(Cost

$411,355)

502,132‌

EQUITY

FUNDS

0.2%

State

Street

SPDR

S&P

MidCap

400

ETF

Trust

1,439‌

1,012‌

Total

Equity

Funds

(Cost

$990)

1,012‌

SHORT-TERM

INVESTMENTS

0.1%

Money

Market

Funds

0.1%

Rowe

Price

Government

Reserve

Fund,

3.69% (3)(4)

703,417‌

703‌

Total

Short-Term

Investments

(Cost

$703)

703‌

ROWE

PRICE

Mid-Cap

Index

Fund

Value

(Cost

and

value

$000s)

‡

SECURITIES

LENDING

COLLATERAL

2.9%

INVESTMENTS

POOLED

ACCOUNT

THROUGH

SECURITIES

LENDING

PROGRAM

WITH

STATE

STREET

BANK

AND

TRUST

COMPANY 2.9%

Money

Market

Funds 2.9%

Rowe

Price

Treasury

Reserve

Fund,

3.66% (3)(4)

14,419,757‌

14,420‌

Total

Investments

Pooled

Account

through

Securities

Lending

Program

with

State

Street

Bank

and

Trust

Company

14,420‌

Total

Securities

Lending

Collateral

(Cost

$14,420)

14,420‌

Total

Investments

Securities

102.9%

Net

Assets

(Cost

$427,468)

518,267‌

‡

are

denominated

U.S.

dollars

unless

otherwise

noted.

(1)

Non-income

producing

(2)

See

Note

All

portion

this

security

loan

June

30,

2026.

(3)

Seven-day

yield

(4)

Affiliated

Companies

ETF

Exchange-Traded

Fund

REIT

domestic

Real

Estate

Investment

Trust

whose

distributions

pass-through

with

original

tax

character

the

shareholder

ROWE

PRICE

Mid-Cap

Index

Fund

The

accompanying

notes

are

integral

part

these

financial

statements.

AFFILIATED

COMPANIES

($000s)

The

fund

may

invest

certain

securities

that

are

considered

affiliated

companies.

defined

the

1940

Act,

affiliated

company

one

which

the

fund

owns

the

outstanding

voting

securities,

company

that

under

common

ownership

control.

The

following

securities

were

considered

affiliated

companies

for

all

some

portion

the

six

months

ended

June

30,

2026.

Net

realized

gain

(loss),

investment

income,

change

net

unrealized

gain/loss,

and

purchase

and

sales

cost

reflect

all

activity

for

the

period

then

ended.

Affiliate

Net

Realized

Gain

(Loss)

Change

Net

Unrealized

Gain/Loss

Investment

Income

Rowe

Price

Government

Reserve

Fund,

3.69%

—‌

8‌

Rowe

Price

Treasury

Reserve

Fund,

3.66%

—‌

—‌++

Totals

—‌#

—‌

8‌+

Supplementary

Investment

Schedule

Affiliate

Value

12/31/25

Purchase

Cost

Sales

Cost

Value

6/30/26

Rowe

Price

Government

Reserve

Fund,

3.69%

472‌

703‌

Rowe

Price

Treasury

Reserve

Fund,

3.66%

10,279‌

14,420‌

Total

15,123‌^

Capital

gain

distributions

from

underlying

Price

funds

represented

the

net

realized

gain

(loss).

Excludes

earnings

securities

lending

collateral,

which

are

subject

rebates

and

fees

described

Note

Investment

income

comprised

dividend

income

and

interest

income.

Purchase

and

sale

information

not

shown

for

cash

management

funds.

The

cost

basis

investments

affiliated

companies

was

$15,123.

ROWE

PRICE

Mid-Cap

Index

Fund

June

30,

2026

Unaudited

Statement

Assets

and

Liabilities

($000s,

except

and

per

amounts)

The

accompanying

notes

are

integral

part

these

financial

statements.

Assets

Investments

securities,

value

(cost

$427,468)

518,267‌

Receivable

for

investment

securities

sold

718‌

Receivable

for

sold

499‌

Dividends

receivable

322‌

Due

from

affiliates

37‌

Other

assets

8‌

Total

assets

519,851‌

Liabilities

Obligation

return

securities

lending

collateral

14,420‌

Payable

for

investment

securities

purchased

1,226‌

Payable

for

redeemed

79‌

Investment

management

fees

payable

36‌

Other

liabilities

344‌

Total

liabilities

16,105‌

Commitments

and

Contingent

Liabilities

(note

)

NET

ASSETS

503,746‌

Net

Assets

Consist

of:

Total

distributable

earnings

(loss)

109,888‌

Paid-in

capital

applicable

19,877,573

$0.0001

par

value

capital

stock

outstanding;

2,000,000,000

the

Corporation

authorized

393,858‌

NET

ASSETS

503,746‌

NET

ASSET

VALUE

PER

Investor

Class

(Net

assets:

$125;

outstanding:

4,922)

25.32‌

Class

(Net

assets:

$183,395;

outstanding:

7,243,490)

25.32‌

Class

(Net

assets:

$320,226;

outstanding:

12,629,161)

25.36‌

ROWE

PRICE

Mid-Cap

Index

Fund

Unaudited

Statement

Operations

($000s)

The

accompanying

notes

are

integral

part

these

financial

statements.

Months

Ended

6/30/26

Investment

Income

(Loss)

Income

Dividend

(net

foreign

taxes

$13)

2,245‌

Securities

lending

34‌

Other

3‌

Total

income

2,282‌

Expenses

Investment

management

180‌

Shareholder

servicing

Class

31‌

Prospectus

and

shareholder

reports

Class

2‌

Class

2‌

4‌

Custody

and

accounting

159‌

Legal

and

audit

17‌

Directors

1‌

Miscellaneous

9‌

Waived

paid

Price

Associates

(

286‌

)

Total

expenses

115‌

Net

investment

income

2,167‌

Realized

and

Unrealized

Gain

Loss

–

Net

realized

gain

securities

17,315‌

Change

net

unrealized

gain

loss

securities

42,080‌

Net

realized

and

unrealized

gain

loss

59,395‌

INCREASE

NET

ASSETS

FROM

OPERATIONS

61,562‌

ROWE

PRICE

Mid-Cap

Index

Fund

Unaudited

Statement

Changes

Net

Assets

($000s)

Months

Ended

6/30/26

Year

Ended

12/31/25

Increase

(Decrease)

Net

Assets

Operations

Net

investment

income

2,167‌

3,160‌

Net

realized

gain

17,315‌

19,878‌

Change

net

unrealized

gain

loss

42,080‌

13,207‌

Increase

net

assets

from

operations

61,562‌

36,245‌

Distributions

shareholders

Net

earnings

Investor

Class

–‌

(

7‌

)

Class

–‌

(

9,526‌

)

Class

–‌

(

11,647‌

)

Decrease

net

assets

from

distributions

–‌

(

21,180‌

)

Capital

transactions

sold

Class

8,340‌

16,573‌

Class

107,075‌

108,309‌

Distributions

reinvested

Class

–‌

9,526‌

Class

–‌

11,647‌

redeemed

Class

(

5,600‌

)

(

15,285‌

)

Class

(

15,096‌

)

(

33,311‌

)

Increase

net

assets

from

capital

transactions

94,719‌

97,459‌

ROWE

PRICE

Mid-Cap

Index

Fund

Unaudited

Statement

Changes

Net

Assets

($000s)

The

accompanying

notes

are

integral

part

these

financial

statements.

Months

Ended

6/30/26

Year

Ended

12/31/25

Net

Assets

Increase

during

period

156,281‌

112,524‌

Beginning

period

347,465‌

234,941‌

End

period

503,746‌

347,465‌

*Share

information

(000s)

sold

Class

361‌

780‌

Class

4,676‌

4,926‌

Distributions

reinvested

Class

–‌

419‌

Class

–‌

512‌

redeemed

Class

(

245‌

)

(

711‌

)

Class

(

642‌

)

(

1,463‌

)

Increase

outstanding

4,150‌

4,463‌

ROWE

PRICE

Mid-Cap

Index

Fund

Unaudited

NOTES

FINANCIAL

STATEMENTS

Rowe

Price

Index

Trust,

Inc. (the

corporation)

registered

under

the

Investment

Company

Act

1940

(the

1940

Act).

The

Mid-Cap

Index

Fund

(the

fund)

open-end

management

investment

company

established

the

corporation

and

intends

diversified

approximately

the

same

proportion

the

index

tracks

diversified.

The

fund

may

become

nondiversified

for

periods

time

solely

result

changes

the

composition

the

index

(for

example,

changes

the

relative

market

capitalization

index

weighting

one

securities

represented

the

index). The

fund

seeks to

track

the

performance

benchmark

index

that

measures

the

investment

return

mid-

capitalization

U.S.

stocks. The

fund

available

for

investment

only

mutual

funds,

college

savings

plans,

and

other

institutional

client

accounts

managed

Rowe

Price

Associates,

Inc.,

its

affiliates

and

not

available

for

direct

purchase

members

the

public.

The

fund

has three classes

the

Mid-Cap

Index

Fund

(Investor

Class),

the

Mid-Cap

Index

Fund–I

Class

Class)

and

the

Mid-Cap

Index

Fund–Z

Class

Class).

Class

require

$500,000

initial

investment

minimum,

although

the

minimum

generally

waived

reduced

for

financial

intermediaries,

eligible

retirement

plans,

and

certain

other

accounts.

The

Class

only

available

funds

advised

Rowe

Price

Associates,

Inc.

and

its

affiliates

and

other

clients

that

are

subject

contractual

fee

for

investment

management

services. Each

class

has

exclusive

voting

rights

matters

solely

that

class;

separate

voting

rights

matters

that

relate

all

classes;

and,

all

other

respects,

the

same

rights

and

obligations

the

other

classes.

NOTE

SIGNIFICANT

ACCOUNTING

POLICIES

Basis

Preparation

The fund

investment

company

and

follows

accounting

and

reporting

guidance

the

Financial

Accounting

Standards

Board

(FASB)

Accounting

Standards

Codification

Topic

946

(ASC

946).

The

accompanying

financial

statements

were

prepared

accordance

with

accounting

principles

generally

accepted

the

United

States

America

(GAAP),

including,

but

not

limited

to,

ASC

946.

GAAP

requires

the

use

estimates

made

management.

Management

believes

that

estimates

and

valuations

are

appropriate;

however,

actual

results

may

differ

from

those

estimates,

and

the

valuations

reflected

the

accompanying

financial

statements

may

differ

from

the

value

ultimately

realized

upon

sale

maturity.

ROWE

PRICE

Mid-Cap

Index

Fund

Investment

Transactions,

Investment

Income,

and

Distributions

Investment

transactions

are

accounted

for

the

trade

date

basis.

Income

and

expenses

are

recorded

the

accrual

basis.

Realized

gains

and

losses

are

reported

the

identified

cost

basis. Income

tax-related

interest

and

penalties,

incurred,

are

recorded

income

tax

expense. Dividends

received

from other

investment

companies are

reflected

dividend income;

capital

gain

distributions

are

reflected

realized

gain/loss. Dividend

income and

capital

gain

distributions

are

recorded

the

ex-dividend

date. Distributions

from

REITs

are

initially

recorded

dividend

income

and,

the

extent

such

represent

return

capital

gain

for

tax

purposes,

are

reclassified

when

such

information

becomes

available. Non-cash

dividends,

any,

are

recorded

the

fair

market

value

the

asset

received. Proceeds

from

litigation

payments,

any,

are

included

either

net

realized

gain

(loss)

change

net

unrealized

gain/loss

from

securities. Distributions

shareholders

are

recorded

the

ex-dividend

date. Income

distributions,

any,

are

declared

and

paid

each

class annually. A

capital

gain

distribution,

any, may

also

declared

and

paid

the

fund

annually.

Class

Accounting

Shareholder

servicing,

prospectus,

and

shareholder

report

expenses

incurred

each

class

are

charged

directly

the

class

which

they

relate.

Expenses

common

all

classes,

investment

income,

and

realized

and

unrealized

gains

and

losses

are

allocated

the

classes

based

upon

the

relative

daily

net

assets

each

class.

Capital

Transactions

Each

investor’s

interest

the

net

assets

the

fund

represented

fund

shares.

The

fund’s

net

asset

value

(NAV)

per

computed

the

New

York

Stock

Exchange

(NYSE),

normally

p.m.

Eastern

time,

each

day

the

NYSE

open

for

business.

However,

the

NAV

per

may

calculated

time

other

than

the

normal

the

NYSE

trading

the

NYSE

restricted,

the

NYSE

closes

earlier,

may

permitted

the

SEC.

Purchases

and

redemptions

fund

are

transacted

the

next-computed

NAV

per

share,

after

receipt

the

transaction

order

Rowe

Price

Associates,

Inc.,

its

agents.

Indemnification

the

normal

course

business, the

fund

may

provide

indemnification

connection

with

its

officers

and

directors,

service

providers,

and/or

private

company

investments. The

fund’s

maximum

exposure

under

these

arrangements

unknown;

however,

the

risk

material

loss

currently

considered

remote.

ROWE

PRICE

Mid-Cap

Index

Fund

NOTE

VALUATION

Fair

Value

The

fund’s

financial

instruments

are

valued

the

NYSE

and

are

reported

fair

value,

which

GAAP

defines

the

price

that

would

received

sell

asset

paid

transfer

liability

orderly

transaction

between

market

participants

the

measurement

date. The fund’s

Board

Directors

(the

Board)

has

designated

Rowe

Price

Associates,

Inc.

the

fund’s

valuation

designee

(Valuation

Designee).

Subject

oversight

the

Board,

the

Valuation

Designee

performs

the

following

functions

performing

fair

value

determinations:

assesses

and

manages

valuation

risks;

establishes

and

applies

fair

value

methodologies;

tests

fair

value

methodologies;

and

evaluates

pricing

vendors

and

pricing

agents.

The

duties

and

responsibilities

the

Valuation

Designee

are

performed

its

Valuation

Committee. The

Valuation

Designee provides

periodic

reporting

the

Board

valuation

matters.

Various

valuation

techniques

and

inputs

are

used

determine

the

fair

value

financial

instruments.

GAAP

establishes

the

following

fair

value

hierarchy

that

categorizes

the

inputs

used

measure

fair

value:

Level

–

quoted

prices

(unadjusted)

active

markets

for

identical

financial

instruments

that

the

fund

can

access

the

reporting

date

Level

–

inputs

other

than

Level

quoted

prices

that

are

observable,

either

directly

indirectly

(including,

but

not

limited

to,

quoted

prices

for

similar

financial

instruments

active

markets,

quoted

prices

for

identical

similar

financial

instruments

inactive

markets,

interest

rates

and

yield

curves,

implied

volatilities,

and

credit

spreads)

Level

–

unobservable

inputs

(including

the Valuation

Designee’s assumptions

determining

fair

value)

Observable

inputs

are

developed

using

market

data,

such

publicly

available

information

about

actual

events

transactions,

and

reflect

the

assumptions

that

market

participants

would

use

price

the

financial

instrument.

Unobservable

inputs

are

those

for

which

market

data

are

not

available

and

are

developed

using

the

best

information

available

about

the

assumptions

that

market

participants

would

use

price

the

financial

instrument.

GAAP

requires

valuation

techniques

maximize

the

use

relevant

observable

inputs

and

minimize

the

use

unobservable

inputs.

When

multiple

inputs

are

used

derive

fair

value,

the

financial

instrument

assigned

the

level

within

the

fair

value

hierarchy

based

the

lowest-level

input

that

significant

the

fair

value

the

financial

ROWE

PRICE

Mid-Cap

Index

Fund

instrument.

Input

levels

are

not

necessarily

indication

the

risk

liquidity

associated

with

financial

instruments

that

level

but

rather

the

degree

judgment

used

determining

those

values.

Valuation

Techniques

Equity

securities,

including

exchange-traded

funds, listed

regularly

traded

securities

exchange

the

over-the-

counter

(OTC)

market

are

valued

the

last

quoted

sale

price

or,

for

certain

markets,

the

official

closing

price

the

time

the

valuations

are

made.

OTC

Bulletin

Board

securities

are

valued

the

mean

the

closing

bid

and

asked

prices.

security

that

listed

traded

than

one

exchange

valued

the

quotation

the

exchange

determined

the

primary

market

for

such

security.

Listed

securities

not

traded

particular

day

are

valued

the

mean

the

closing

bid

and

asked

prices

for

domestic

securities.

Investments

mutual

funds

are

valued

the

mutual

fund’s

closing

NAV

per

the

day

valuation.

Assets

and

liabilities

other

than

financial

instruments,

including

short-term

receivables

and

payables,

are

carried

cost,

estimated

realizable

value,

less,

which

approximates

fair

value.

Investments

for

which

market

quotations are

not

readily

available

deemed

unreliable

are

valued

fair

value

determined

good

faith

the

Valuation

Designee.

The

Valuation

Designee

has

adopted

methodologies

for

determining

the

fair

value

investments

for

which

market

quotations

are

not

readily

available

deemed

unreliable,

including

the

use

other

pricing

sources.

Factors

used

determining

fair

value

vary

type

investment

and

may

include

market

investment

specific

considerations.

The

Valuation

Designee typically

will

afford

the

greatest

weight

actual

prices

arm’s

length

transactions,

the

extent

they

represent

orderly

transactions

between

market

participants,

transaction

information

can

reliably

obtained,

and

prices

are

deemed

representative

fair

value.

However,

the

Valuation

Designee may

also

consider

other

valuation

methods

such

market-based

valuation

multiples;

discount

premium

from

market

value

similar,

freely

traded

security

the

same

issuer;

discounted

cash

flows;

yield

maturity;

some

combination.

Fair

value

determinations

are

reviewed

regular

basis.

Because

any

fair

value

determination

involves

significant

amount

judgment,

there

degree

subjectivity

inherent

such

pricing

decisions. Fair

value

prices

determined

the

Valuation

Designee could

differ

from

those

other

market

participants,

and

possible

that

the

fair

value

determined

for

security

may

materially

different

from

the

value

that

could

realized

upon

the

sale

that

security.

ROWE

PRICE

Mid-Cap

Index

Fund

Valuation

Inputs

June

30,

2026,

all

the

fund’s

financial

instruments

were

classified

Level

based

the

inputs

used

determine

their

fair

values.

NOTE

OTHER

INVESTMENT

TRANSACTIONS

Consistent

with

its

investment

objective, the

fund

engages

the

following

practices

manage

exposure

certain

risks

and/or

enhance

performance.

The

investment

objective,

policies,

program,

and

risk

factors

of the

fund

are

described

fully

in the

fund’s prospectus

and

Statement

Additional

Information.

Securities

Lending

The fund

may

lend

its

securities

approved

borrowers

earn

additional

income.

Its

securities

lending

activities

are

administered

lending

agent

accordance

with

securities

lending

agreement.

Security

loans

generally

not

have

stated

maturity

dates,

and

the

fund

may

recall

security

any

time.

The

fund

receives

collateral

the

form

cash

U.S.

government

securities.

Collateral

maintained

over

the

life

the

loan

amount

not

less

than

the

value

loaned

securities;

any

additional

collateral

required

due

changes

security

values

delivered

the

fund

the

business

day.

Cash

collateral

invested

accordance

with

investment

guidelines

approved

fund

management.

Additionally,

the

lending

agent

indemnifies

the

fund

against

losses

resulting

from

borrower

default.

Although

risk

mitigated

the

collateral

and

indemnification,

the

fund

could

experience

delay

recovering

its

securities

and

possible

loss

income

value

the

borrower

fails

return

the

securities,

collateral

investments

decline

value,

and

the

lending

agent

fails

perform.

Any

non-cash

collateral

received

cannot

sold,

re-invested

pledged

the

fund,

except

the

event

borrower

default. Securities

lending

revenue

consists

earnings

invested

collateral

and

borrowing

fees,

net

any

rebates

the

borrower,

compensation

the

lending

agent,

and

other

administrative

costs.

accordance

with

GAAP,

investments

made

with

cash

collateral

are

reflected

the

accompanying

financial

statements,

but

collateral

received

the

form

securities

not.

June

30,

2026,

the

value

loaned

securities

was

$23,257,000;

the

aggregate

value

collateral

was

$23,799,000

and

consisted

cash

collateral

and

investments

$14,420,000

and

U.S.

government

securities

$9,379,000.

Other

Purchases

and

sales

portfolio

securities

other

than

in-kind

transactions,

any,

and short-term securities

aggregated $239,922,000 and

$142,893,000,

respectively,

for

the

six

months ended

June

30,

2026.

ROWE

PRICE

Mid-Cap

Index

Fund

NOTE

FEDERAL

INCOME

TAXES

Generally,

provision

for

federal

income

taxes

required

since

the

fund

intends

to continue

qualify

regulated

investment

company

under

Subchapter

the

Internal

Revenue

Code

and

distribute

shareholders

all

its taxable

income

and

gains.

Distributions

determined

accordance

with

federal

income

tax

regulations

may

differ

amount

character

from

net

investment

income

and

realized

gains

for

financial

reporting

purposes.

Financial

reporting

records

are

adjusted

for

permanent

book/tax

differences

reflect

tax

character

but

are

not

adjusted

for

temporary

differences.

The

amount

and

character

tax-basis

distributions

and

composition

net

assets

are

finalized

fiscal

year-end;

accordingly,

tax-basis

balances

have

not

been

determined

the

date

this

report.

June

30,

2026,

the

cost

investments

(including

derivatives,

any)

for

federal

income

tax

purposes

was

$435,182,000.

Net

unrealized

gain

aggregated

$83,085,000

period-end,

which

$111,178,000

appreciated

investments

and

$28,093,000

depreciated

investments.

NOTE

FOREIGN TAXES

The

fund

subject

foreign

income

taxes

imposed

certain

countries

which

invests.

Additionally,

capital

gains

realized

upon

disposition

securities

issued

certain

foreign

countries

are

subject

capital

gains

tax

imposed

those

countries.

All

taxes

are

computed

accordance

with

the

applicable

foreign

tax

law,

and,

the

extent

permitted,

capital

losses

are

used

offset

capital

gains.

Taxes

attributable

income

are

accrued

the

fund

reduction

income.

Current

and

deferred

tax

expense

attributable

capital

gains

reflected

component

realized

change

unrealized

gain/

loss

securities

the

accompanying

financial

statements.

the

extent

that

the

fund

has

country

specific

capital

loss

carryforwards,

such

carryforwards

are

applied

against

net

unrealized

gains

when

determining

the

deferred

tax

liability.

Any

deferred

tax

liability

incurred

the

fund

included

either

Other

liabilities

Deferred

tax

liability

the

accompanying

Statement

Assets

and

Liabilities.

ROWE

PRICE

Mid-Cap

Index

Fund

NOTE

PARTY

TRANSACTIONS

The

fund

managed

Rowe

Price

Associates,

Inc.

(Price

Associates),

wholly

owned

subsidiary

Rowe

Price

Group,

Inc.

(Price

Group). Price

Associates

has

entered

into

sub-advisory

agreement(s)

with

one

its

wholly

owned

subsidiaries,

provide

investment

advisory

services

the

fund. The

investment

management

agreement

between

the

fund

and

Price

Associates

provides

for

annual

investment

management

fee

equal

to 0.09%

the

fund’s

average

daily

net

assets.

The

fee

computed

daily

and

paid

monthly.

The

Investor

Class

subject

contractual

expense

limitation

through

the

expense

limitation

date

indicated

the

table

below.

This

agreement

will

continue

through

the

expense

limitation

date

indicated

the

table

below,

and

may

renewed,

revised,

revoked

only

with

approval

the

fund’s

Board.

During

the

limitation

period,

Price

Associates

is required

waive

pay

any

expenses

(excluding

interest;

expenses

borrowings,

taxes,

and

brokerage;

non-recurring,

extraordinary

expenses;

and

acquired

fund

fees

and

expenses)

that

would

otherwise

cause

the class’s ratio

annualized

total

expenses

average

net

assets

(net

expense

ratio)

exceed

its

expense

limitation.

The

class

required

repay

Price

Associates

for

expenses

previously

waived/paid

the

extent

the

class’s net

assets

grow

expenses

decline

sufficiently

allow

repayment

without

causing

the class’s net

expense

ratio

(after

the

repayment

taken

into

account)

exceed

the

lesser

of:

(1)

the

expense

limitation

place

the

time

such

amounts

were

waived;

(2)

the class’s

current

expense

limitation.

However,

repayment

will

made

than

three

years

after

the

date

payment

waiver.

The

Class

also

subject

operating

expense

limitation

Class

Limit)

pursuant

which

Price

Associates

contractually

required

pay

all

operating

expenses

the

Class,

excluding

management

fees;

interest;

expenses

borrowings,

taxes,

and

brokerage; non-recurring,

extraordinary expenses; and

acquired

fund

fees

and

expenses, to

the

extent

such

operating

expenses,

annualized

basis,

exceed

the

Class

Limit. This

agreement

will

continue

through

the

expense

limitation

date

indicated

the

table

below,

and

may

renewed,

revised,

revoked

only

with

approval by

the

fund’s

Board.

The

Class

required

repay

Price

Associates

for

expenses

previously

paid

the

extent

the

class’s

net

assets

grow

expenses

decline

sufficiently

allow

repayment

without

causing

the

class’s

operating

expenses

(after

the

repayment

taken

into

account)

exceed

the

lesser

of:

(1)

the

Class

Limit

place

ROWE

PRICE

Mid-Cap

Index

Fund

the

time

such

amounts

were

paid;

(2)

the

current

Class

Limit.

However,

repayment

will

made

than

three

years

after

the

date

payment

waiver.

The

Class

also

subject

contractual

expense

limitation

agreement

whereby

Price

Associates

has

agreed

waive

and/or

bear

all

the

Class’

expenses

(excluding

interest;

expenses

borrowings,

taxes,

and

brokerage;

non-recurring,

extraordinary

expenses;

and

acquired

fund

fees

and

expenses)

their

entirety.

This

fee

waiver

and/or

expense

reimbursement

arrangement

expected

remain

place

indefinitely,

and

the

agreement

may

only

amended

terminated

with

approval

the

fund’s

Board.

Expenses

the

fund

waived/paid

the

manager

are

not

subject

later

repayment

the

fund.

Pursuant

these

agreements,

expenses

were waived/paid

and/or

repaid

Price

Associates

during

the six

months

ended June

30,

2026 as

indicated

the

table

below.

Including

these

amounts,

expenses

previously

waived/paid

Price

Associates

the

amount

of $510,000 remain

subject

repayment

the

fund

June

30,

2026. Any

repayment

expenses

previously

waived/paid

Price

Associates

during

the

period

would

included

the

net

investment

income

and

expense

ratios

presented

the

accompanying

Financial

Highlights.

addition,

the

fund

has

entered

into

service

agreements

with

Price

Associates

and

wholly

owned

subsidiary

Price

Associates,

each

affiliate

the

fund

(collectively,

Price).

Price

Associates

provides

certain

accounting

and

administrative

services

the

fund.

Rowe

Price

Services,

Inc.

provides

shareholder

and

administrative

services

its

capacity

the

fund’s

transfer

and

dividend-disbursing

agent.

For

the

six

months

ended

June

30,

2026,

expenses

incurred

pursuant

these

service

agreements

were

$64,000

for

Price

Associates

and

less

than

$1,000

for

Rowe

Price

Services,

Inc.

All

amounts

due

and

due

from

Price,

exclusive

investment

management

fees

payable,

are

presented

net

the

accompanying

Statement

Assets

and

Liabilities.

Investor

Class

Expense

limitation/I

Class

Limit

0.27%

0.05%

0.00%

Expense

limitation

date

02/29/28

N/A

(Waived)/repaid

during

the

period

($000s)

$—

(1)

$(68)

$(218)

(1)

Amount

rounds

less

than

$1,000

ROWE

PRICE

Mid-Cap

Index

Fund

Rowe

Price

Investment

Services,

Inc.

(Investment

Services)

serves

distributor

the

fund.

Pursuant

underwriting

agreement,

compensation

for

any

distribution

services

provided

paid

Investment

Services

the

fund

(except

for

12b-1

fees

under

Board-approved

Rule

12b-1

plan).

Additionally,

the

fund

one

several

mutual

funds

which

certain

college

savings

plans

managed

Price

Associates invests.

approved

the

fund’s

Board

Directors,

shareholder

servicing

costs

associated

with

each

college

savings

plan

are

borne

the

fund

proportion

the

average

daily

value

its

owned

the

college

savings

plan.

Price

has

agreed

to waive/reimburse

shareholder

servicing

costs in

excess

0.05%

the

fund’s

average

daily

value

its

owned

the

college

savings

plan.

Any

amounts

waived/

paid

Price

under

this

voluntary

agreement

are

not

subject

repayment

the

fund.

Price

may

amend

terminate

this

voluntary

arrangement

any

time

without

prior

notice.

For

the

six

months ended

June

30,

2026,

the

fund

was

charged $31,000 for

shareholder

servicing

costs

the

college

savings

plans, which

net

reimbursement

Price

$3,000.

All

amounts

due

and

due

from

Price,

exclusive

investment

management

fees

payable,

are

presented

net

the

accompanying

Statement

Assets

and

Liabilities. At

June

30,

2026,

approximately

93%

the

outstanding

the

Class

were

held

college

savings

plans.

Mutual

funds,

trusts,

and

other

accounts

managed

Price

Associates

its

affiliates

(collectively,

Price

Funds

and

accounts)

may

invest

the

fund.

Price

fund

account

may

invest

for

the

purpose

exercising

management

control

over

the

fund.

June

30,

2026, 100%

the

Class's

outstanding

were

held

Price

Funds

and

accounts.

The fund

may

invest

its

cash

reserves

certain

open-end

management

investment

companies

managed

Price

Associates

and

considered

affiliates

the

fund:

the

Rowe

Price

Government

Reserve

Fund

the

Rowe

Price

Treasury

Reserve

Fund,

organized

money

market

funds

(together,

the

Price

Reserve

Funds).

The

Price

Reserve

Funds

are

offered

short-term

investment

options

mutual

funds,

trusts,

and

other

accounts

managed

Price

Associates

its

affiliates

and

are

not

available

for

direct

purchase

members

the

public.

Cash

collateral

from

securities

lending,

any,

invested

the

Rowe

Price

Treasury Reserve Fund. The

Price

Reserve

Funds

pay

investment

management

fees.

June

30,

2026,

Rowe

Price

Group,

Inc.,

its

wholly

owned

subsidiaries,

owned

4,922

the

Investor

Class,

representing

100%

the

Investor

Class's

net

assets.

ROWE

PRICE

Mid-Cap

Index

Fund

The fund may

participate

securities

purchase

and

sale

transactions

with

other

funds

accounts

advised

Price

Associates

(cross

trades),

accordance

with

procedures

adopted

by the

fund’s

Board

and

Securities

and

Exchange

Commission

rules,

which

require,

among

other

things,

that

such

purchase

and

sale

cross

trades

effected

the

independent

current

market

price

the

security.

During

the

six

months

ended

June

30,

2026,

the

fund

had

purchases

sales

cross

trades

with

other

funds

accounts

advised

Price

Associates.

NOTE

SEGMENT

REPORTING

Operating segments

are

defined

components

company

that

engage

business

activities

and

for

which

discrete

financial

information

available

and

regularly

reviewed

the

chief

operating

decision

maker

(CODM)

deciding

how

allocate

resources

and

assess

performance.

The

Management

Committee

Price Group

acts

the

fund’s

CODM.

The

fund

makes

investments

accordance

with

its

investment

objective

outlined

the

Prospectus

and

considered

one

reportable

segment

because

the

CODM

allocates

resources

and

assesses

the

operating

results

the

fund

the

whole.

The

fund’s

revenue

derived

from

investments

portfolio

securities.

The

CODM

allocates

resources

and

assesses

performance

based

the

operating

results

the

fund,

which

consistent

with

the

results

presented

the

statement

operations,

statement

changes

net

assets

and

financial

highlights.

The

CODM

compares

the

fund’s

performance

its

benchmark

index

and

evaluates

the

positioning

the

fund

relation

its

investment

objective.

The

measure

segment

assets

net

assets

the

fund

which

disclosed

the

statement

assets

and

liabilities.

The accounting

policies

the

segment

are

the

same

those

described

the

summary

significant

accounting

policies.

The

financial

statements

include

all

details

the

segment

assets,

segment

revenue

and

expenses;

and

reflect

the

financial

results

the

segment.

ROWE

PRICE

Mid-Cap

Index

Fund

NOTE

OTHER

MATTERS

Unpredictable environmental,

political,

social

and

economic

events,

including

but

not

limited

to,

environmental

natural

disasters,

war

and

conflict,

terrorism,

geopolitical

and

regulatory

developments

(including

trading

and

tariff

arrangements),

and

public

health

epidemics

threats,

may

significantly

affect

the

economy

and

the

markets

and

issuers

which

fund

invests.

The

extent

and

duration

such

events

and

resulting

market

disruptions

cannot

predicted.

These

and

other

similar

events

may

cause

instability

across

global

markets,

including

reduced

liquidity

and

disruptions

trading

markets,

while

some

events

may

affect

certain

geographic

regions,

countries,

sectors,

and

industries

significantly

than

others,

and

exacerbate

other

pre-

existing

political,

social,

and

economic

risks.

The

fund’s

performance

could

negatively

impacted

the

value

portfolio

holding

were

harmed

these

such

events.

ROWE

PRICE

Mid-Cap

Index

Fund

APPROVAL

INVESTMENT

MANAGEMENT

AGREEMENT

AND

SUBADVISORY

AGREEMENT

Each

year,

the

fund’s

Board

Directors

(Board)

considers

the

continuation

the

investment

management

agreement

(Advisory

Contract)

between

the

fund

and

its

investment

adviser,

Rowe

Price

Associates,

Inc.

(Adviser),

well

the

investment

subadvisory

agreement

(Subadvisory

Contract)

that

the

Adviser

has

entered

into

with

Rowe

Price

International

Ltd

(Subadviser)

behalf

the

fund.

that

regard,

meeting

held

March

11-12,

2026

(Meeting),

the

Board,

including

all

the

fund’s

independent

directors

who

were

present

person

the

Meeting,

approved

the

continuation

the

fund’s

Advisory

Contract

and

Subadvisory

Contract.

the

Meeting,

the

Board

considered

the

factors

and

reached

the

conclusions

described

below

relating

the

selection

the

Adviser

and

Subadviser

and

the

approval

the

Advisory

Contract

and

Subadvisory

Contract.

The

independent

directors

were

assisted

their

evaluation

the

Advisory

Contract

and

Subadvisory

Contract

independent

legal

counsel

from

whom

they

received

separate

legal

advice

and

with

whom

they

met

separately.

providing

information

the

Board,

the

Adviser

was

guided

detailed

set

requests

for

information

submitted

independent

legal

counsel

behalf

the

independent

directors.

considering

and

approving

the

continuation

the

Advisory

Contract

and

Subadvisory

Contract,

the

Board

considered

the

information

believed

was

relevant,

including,

but

not

limited

to,

the

information

discussed

below.

The

Board

considered

not

only

the

specific

information

presented

connection

with

the

Meeting

but

also

the

knowledge

gained

over

time

through

interaction

with

the

Adviser

and

Subadviser

about

various

topics

and

information

provided

the

Adviser.

The

Board

meets

regularly

and,

each

its

meetings,

covers

extensive

agenda

topics

and

materials

and

considers

factors

that

are

relevant

its

annual

consideration

the

renewal

the

Rowe

Price

funds’

advisory

contracts,

including

performance

and

the

services

and

support

provided

the

funds

and

their

shareholders.

Services

Provided

the

Adviser

and

Subadviser

The

Board

considered

the

nature,

quality,

and

extent

the

services

provided

the

fund

the

Adviser

and

Subadviser.

These

services

include,

but

are

not

limited

to,

directing

the

fund’s

investments

accordance

with

its

investment

program

and

the

overall

management

the

fund’s

portfolio,

well

variety

activities

such

financial,

investment

operations,

and

administrative

services;

compliance

and

infrastructure,

well

compliance

with

new

and

evolving

regulatory

requirements

(e.g.,

derivatives

and

liquidity

risk

management);

maintaining

the

fund’s

records

and

registrations;

and

shareholder

communications.

The

Board

also

reviewed

the

background

and

experience

the

Adviser’s

and

Subadviser’s

senior

management

teams

and

investment

personnel

involved

the

management

ROWE

PRICE

Mid-Cap

Index

Fund

the

fund,

well

the

Adviser’s

compliance

record.

The

Board

concluded

that

the

information

considered

with

respect

the

nature,

quality,

and

extent

the

services

provided

the

Adviser

and

Subadviser,

well

the

other

factors

considered

the

Meeting,

supported

the

Board’s

approval

the

continuation

the

Advisory

Contract

and

Subadvisory

Contract.

Investment

Performance

the

Fund

The

Board

took

into

account

discussions

with

the

Adviser

and

detailed

reports

that

regularly

receives

throughout

the

year

relative

and

absolute

performance

for

the

Rowe

Price

funds.

connection

with

the

Meeting,

the

Board

reviewed

information

provided

the

Adviser

that

compared

the

fund’s

total

returns,

well

wide

variety

other

previously

agreed-upon

performance

measures

and

market

data,

against

relevant

benchmark

indexes

and

(as

applicable)

peer

groups

funds

with

similar

investment

programs

for

various

periods

through

December

31,

2025.

Additionally,

the

Board

reviewed

the

fund’s

relative

performance

information

September

30,

2025,

which

ranked

the

returns

the

fund’s

Investor

Class

for

various

periods

against

universe

funds

with

similar

investment

programs

selected

Broadridge,

independent

provider

investment

company

data.

the

course

its

deliberations,

the

Board

considered

performance

information

provided

throughout

the

year

and

connection

with

the

Advisory

Contract

review

the

Meeting,

well

information

provided

during

investment

review

meetings

conducted

with

portfolio

managers

and

senior

investment

personnel

during

the

course

the

year

regarding

the

fund’s

performance.

The

Board

also

considered

relevant

factors,

such

overall

market

conditions

and

trends

that

could

adversely

impact

the

fund’s

performance,

length

the

fund’s

performance

track

record,

and

how

closely

the

fund’s

strategies

align

with

its

benchmarks

and

peer

groups.

The

Board

concluded

that

the

information

considered

with

respect

the

fund’s

performance,

well

the

other

factors

considered

the

Meeting,

supported

the

Board’s

approval

the

continuation

the

Advisory

Contract

and

Subadvisory

Contract.

Costs,

Benefits,

Profits,

and

Economies

Scale

The

Board

reviewed

detailed

information

regarding

the

revenues

received

the

Adviser

under

the

Advisory

Contract

and

other

direct

and

indirect

benefits

that

the

Adviser

(and

its

affiliates,

including

the

Subadviser)

may

have

realized

from

its

relationship

with

the

fund.

considering

soft-dollar

arrangements,

the

Board

noted

that

the

Adviser

may

use

brokerage

commissions

connection

with

certain

Rowe

Price

funds’

securities

transactions

pay

for

research

when

permissible,

and

the

Board

considered

that

the

Adviser

may

receive

some

benefit

from

soft-

dollar

arrangements

pursuant

which

research

received

from

broker-dealers

that

execute

the

applicable

fund’s

portfolio

transactions.

APPROVAL

INVESTMENT

MANAGEMENT

AGREEMENT

AND

SUBADVISORY

AGREEMENT

(continued)

ROWE

PRICE

Mid-Cap

Index

Fund

The

Board

received

information

the

estimated

costs

incurred

and

profits

realized

the

Adviser

from

managing

the

Rowe

Price

funds.

While

the

Board

did

not

review

information

regarding

profits

realized

from

managing

the

fund

particular

because

the

fund

had

either

not

achieved

sufficient

portfolio

asset

size

the

Adviser

had

not

recognized

sufficient

revenues

produce

meaningful

profit

margin

percentages,

the

Board

concluded

that

the

Adviser’s

profits

were

reasonable

light

the

services

provided

the

Rowe

Price

funds.

The

Board

also

considered

whether

the

fund

benefits

under

the

fee

levels

set

forth

the

Advisory

Contract

otherwise

from

any

economies

scale

potentially

realized

the

Adviser.

Under

the

Advisory

Contract,

the

fund

pays

management

fee

the

Adviser

for

investment

management

services

based

the

fund’s

average

daily

net

assets

and

the

fund

pays

its

own

expenses

operations.

Under

the

Subadvisory

Contract,

the

Adviser

may

pay

the

Subadviser

60%

the

advisory

fees

that

the

Adviser

receives

from

the

fund.

The

fund’s

shareholders

benefit

from

potential

economies

scale

through

decline

certain

operating

expenses

the

fund

grows

size,

and

have

also

benefitted

from

management

fee

reductions

over

the

years.

addition,

the

fund

subject

contractual

expense

limitations

that

require

the

Adviser

waive

its

management

fees

and/or

bear

any

operating

expenses

that

would

otherwise

cause

the

expenses

class

the

fund

exceed

certain

percentage

based

the

class’s

net

assets.

The

expense

limitations

mitigate

the

potential

for

increase

operating

expenses

above

certain

level

that

could

impact

shareholders.

The

fund

also

offers

Class,

which

serves

underlying

investment

within

certain

Rowe

Price

fund

arrangements.

The

Adviser

waives

its

management

fee

the

Class

and

waives

bears

the

Class’s

other

operating

expenses,

with

certain

exceptions.

The

Board

considered

whether

the

management

fee

and

operating

expense

waivers

the

Class

may

present

means

for

cross-

subsidization

the

Class

other

classes

the

fund.

that

regard,

the

Board

noted

that

the

Class

operating

expenses

are

covered

the

all-inclusive

fees

charged

the

investing

Rowe

Price

fund

funds

and

that

any

Class

operating

expenses

not

covered

the

investing

Rowe

Price

funds

funds’

fees

are

paid

the

Adviser

and

not

shareholders

any

other

class

the

fund.

APPROVAL

INVESTMENT

MANAGEMENT

AGREEMENT

AND

SUBADVISORY

AGREEMENT

(continued)

ROWE

PRICE

Mid-Cap

Index

Fund

addition,

the

Board

noted

that

the

fund

potential

economies

scale

through

the

Adviser’s

ongoing

investments

its

business

support

the

Rowe

Price

funds,

including

investments

trading

systems,

technology,

and

regulatory

support

enhancements,

and

the

ability

possibly

negotiate

lower

fee

arrangements

with

third-party

service

providers.

The

Board

concluded

that

the

management

fee

structure

for

the

fund

provides

for

reasonable

sharing

benefits

from

potential

economies

scale

with

the

fund

and

its

investors.

Fees

and

Expenses

The

Board

was

provided

with

information

regarding

industry

trends

management

fees

and

expenses.

Among

other

things,

the

Board

reviewed

data

for

peer

groups

that

were

compiled

Broadridge,

which

compared:

(i)

contractual

management

fees,

actual

management

fees,

and

total

expenses

the

fund’s

Investor

Class

and

Class

with

group

competitor

funds

selected

Broadridge

(Expense

Group);

and

(ii)

actual

management

fees

and

total

expenses

the

fund’s

Investor

Class

and

Class

with

broader

set

funds

within

the

Lipper

investment

classification

(Expense

Universe).

The

Board

considered

the

fund’s

contractual

management

fee

rate,

actual

management

fee

rate

(which

reflects

the

management

fees

actually

received

from

the

fund

the

Adviser

after

any

applicable

waivers,

reductions,

reimbursements),

operating

expenses,

and

total

expenses

(which

reflect

the

net

total

expense

ratio

the

fund

after

any

waivers,

reductions,

or reimbursements)

comparison

with

the

information

for

the

Broadridge

peer

groups.

Broadridge

generally

constructed

the

peer

groups

seeking

the

most

comparable

funds

based

similar

investment

classifications

and

objectives,

expense

structure,

asset

size,

and

operating

components

and

attributes

and

ranked

funds

into

quintiles,

with

the

first

quintile

representing

the

funds

with

the

lowest

relative

expenses

and

the

fifth

quintile

representing

the

funds

with

the

highest

relative

expenses.

The

information

provided

the

Board

for

the

fund’s

Investor

Class

indicated

that

the

contractual

management

fee

ranked

the

first

quintile

(Expense

Group),

the

actual

management

fee

rate

ranked

the

second

quintile

(Expense

Group)

and

third

quintile

(Expense

Universe),

and

the

fund’s

total

expenses

ranked

the

fourth

quintile

(Expense

Group

and

Expense

Universe).

The

information

provided

the

Board

for

the

fund’s

Class

indicated

that

the

contractual

management

fee

ranked

the

first

quintile

(Expense

Group),

the

actual

management

fee

rate

ranked

the

first

quintile

(Expense

Group

and

Expense

Universe),

and

the

fund’s

total

expenses

ranked

the

second

quintile

(Expense

Group)

and

third

quintile

(Expense

Universe).

APPROVAL

INVESTMENT

MANAGEMENT

AGREEMENT

AND

SUBADVISORY

AGREEMENT

(continued)

ROWE

PRICE

Mid-Cap

Index

Fund

The

Board

was

provided

the

fee

schedules

and

other

account

fee

information

for

certain

comparable

investment

portfolios

that

are

advised

subadvised

the

Adviser

and

its

affiliates,

including

separately

managed

accounts

for

institutional

investors;

subadvised

funds;

and

other

sponsored

investment

portfolios

that

are

not

registered

investment

companies,

including

collective

investment

trusts

and

pooled

vehicles

organized

and

offered

investors

outside

the

United

States.

The

fee

schedules

and

account

fee

information,

which

are

subject

change,

may

negotiated

under

certain

circumstances

and

may

differ

across

regions.

Management

provided

the

Board

with

information

about

the

Adviser’s

responsibilities

and

services

provided

subadvisory

clients

and

other

types

clients,

including

information

about

how

the

requirements,

economics

and

risks

the

domestic

and

international

businesses

may

differ

from

those

the

proprietary

mutual

fund

and

ETF

(“registered

fund”)

business.

The

Board

considered

information

showing

that

the

Adviser’s

proprietary

registered

fund

business

generally

complex

from

business

and

regulatory

perspective

than

its

other

domestic

and

international

businesses

and

considered

various

relevant

factors,

such

the

broader

scope

operations

and

oversight,

extensive

shareholder

communication

infrastructure,

heightened

business

risks,

and

differences

applicable

laws

and

regulations

associated

with

the

Adviser’s

proprietary

registered

fund

business.

assessing

the

reasonableness

the

fund’s

management

fee

rate,

the

Board

considered

the

differences

the

nature

the

services

required

for

the

Adviser

manage

its

registered

fund

business

versus

managing

discrete

pool

assets

subadviser

another

institution’s

mutual

fund

for

institutional

account

and

that

the

Adviser

generally

performs

significant

additional

services

and

assumes

greater

risk

managing

the

fund

and

other

Rowe

Price

funds

than

does

for

institutional

account

clients,

including

subadvised

funds.

the

basis

the

information

provided

and

the

factors

considered,

the

Board

concluded

that

the

fees

paid

the

fund

under

the

Advisory

Contract

are

reasonable.

Approval

the

Advisory

Contract

and

Subadvisory

Contract

noted,

the

Board

approved

the

continuation

the

Advisory

Contract

and

Subadvisory

Contract.

single

factor

was

considered

isolation

determinative

the

decision.

Rather,

the

Board

concluded,

light

weighting

and

balancing

all

factors

considered,

that

was

the

best

interests

the

fund

and

its

shareholders

for

the

Board

approve

the

continuation

the

Advisory

Contract

and

Subadvisory

Contract

(including

the

fees

charged

for

services

thereunder).

APPROVAL

INVESTMENT

MANAGEMENT

AGREEMENT

AND

SUBADVISORY

AGREEMENT

(continued)

1307

Point

Street

Baltimore,

Maryland

21231

Rowe

Price

Investment

Services,

Inc.

Call

1-800-638-5660

request

prospectus

summary

prospectus;

each

includes

investment

objectives,

risks,

fees,

expenses,

and

other

information

that

you

should

read

and

consider

carefully

before

investing.

F32-051

8/26

Item 8. Changes in and Disagreements with Accountants for Open-End Management Investment Companies.

Not applicable.

Item 9. Proxy Disclosures for Open-End Management Investment Companies.

Not applicable.

Item 10. Remuneration Paid to Directors, Officers, and Others of Open-End Management Investment Companies.

Remuneration paid to Directors is included in Item 7 of this Form N-CSR.

Item 11. Statement Regarding Basis for Approval of Investment Advisory Contract.

If applicable, see Item 7.

Item 12. Disclosure of Proxy Voting Policies and Procedures for Closed-End Management Investment Companies.

Not applicable.

Item 13. Portfolio Managers of Closed-End Management Investment Companies.

Not applicable.

Item 14. Purchases of Equity Securities by Closed-End Management Investment Company and Affiliated Purchasers.

Not applicable.

Item 15. Submission of Matters to a Vote of Security Holders.

There has been no change to the procedures by which shareholders may recommend nominees to the registrant’s board of directors.

Item 16. Controls and Procedures.

(a) The registrant’s principal executive officer and principal financial officer have evaluated the registrant’s disclosure controls and procedures within 90 days of this filing and have concluded that the registrant’s disclosure controls and procedures were effective, as of that date, in ensuring that information required to be disclosed by the registrant in this Form N-CSR was recorded, processed, summarized, and reported timely.

(b) The registrant’s principal executive officer and principal financial officer are aware of no change in the registrant’s internal control over financial reporting that occurred during the period covered by this report that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting.

Item 17. Disclosure of Securities Lending Activities for Closed-End Management Investment Companies.

Not applicable.

Item 18. Recovery of Erroneously Awarded Compensation.

Not applicable.

Item 19. Exhibits.


(a)(1)		The registrant’s code of ethics pursuant to Item 2 of Form N-CSR is filed with the registrant’s annual Form N-CSR.

(2)		Listing standards relating to recovery of erroneously awarded compensation: Not applicable.

(3)		Separate certifications by the registrant’s principal executive officer and principal financial officer, pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 and required by Rule 30a-2(a) under the Investment Company Act of 1940, are attached.

(b)		A certification by the registrant’s principal executive officer and principal financial officer, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and required by Rule 30a-2(b) under the Investment Company Act of 1940, is attached.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.


T. Rowe Price Index Trust, Inc.
By		/s/ David Oestreicher
		David Oestreicher
		Principal Executive Officer

Date		August 19, 2026

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.


By		/s/ David Oestreicher
		David Oestreicher
		Principal Executive Officer

Date		August 19, 2026


By		/s/ Alan S. Dupski
		Alan S. Dupski
		Principal Financial Officer

Date		August 19, 2026

ATTACHMENTS / EXHIBITS

ATTACHMENTS / EXHIBITS

302 CERTIFICATIONS

906 CERTIFICATIONS

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