SEC FORM 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person ^*

Gramm Christopher

(Last)

(First)

(Middle)

300 KIMBALL DRIVE, SUITE 101

(Street)

PARSIPPANY

07054

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
07/09/2025

3. Issuer Name and Ticker or Trading Symbol
AdvanSix Inc. [ ASIX ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
VP and Interim CFO

5. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock, par value $0.01	54,570 ⁽¹⁾	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
Stock Option (right to buy)	⁽²⁾	03/08/2027	Common Stock, par value $0.01	8,590	26.66	D
Stock Option (right to buy)	⁽³⁾	03/02/2028	Common Stock, par value $0.01	6,406	41.97	D
Stock Option (right to buy)	⁽⁴⁾	02/27/2029	Common Stock, par value $0.01	9,019	33.34	D
Stock Option (right to buy)	⁽⁵⁾	02/24/2031	Common Stock, par value $0.01	7,133	29.21	D
Stock Option (right to buy)	⁽⁶⁾	02/28/2032	Common Stock, par value $0.01	5,264	39.15	D
Stock Option (right to buy)	⁽⁷⁾	02/28/2033	Common Stock, par value $0.01	4,088	41.2	D

Explanation of Responses:

1. Amount includes 18,376 unvested restricted stock units granted pursuant to the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as Amended and Restated (the "Stock Plan").

2. Grant of stock options pursuant to the Stock Plan, which vested in three equal annual installments on the first three anniversaries of the grant date of March 8, 2017.

3. Grant of stock options pursuant to the Stock Plan, which vested in three equal annual installments on the first three anniversaries of the grant date of March 2, 2018.

4. Grant of stock options pursuant to the Stock Plan, which vested in three equal annual installments on the first three anniversaries of the grant date of February 27, 2019.

5. Grant of stock options pursuant to the Stock Plan, which vested in three equal annual installments on the first three anniversaries of the grant date of February 24, 2021.

6. Grant of stock options pursuant to the Stock Plan, which vested in three equal annual installments on the first three anniversaries of the grant date of February 28, 2022.

7. Grant of stock options pursuant to the Stock Plan, which are scheduled to vest in three equal annual installments on the first three anniversaries of the grant date of February 28, 2023.

	/s/ Achilles B. Kintiroglou for Christopher Gramm	07/17/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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