Rule 424 (b) (3)
Registration No.: 333-275151



NATIONAL RURAL UTILITIES COOPERATIVE FINANCE CORPORATION

Medium-Term Notes, Series D
Due Nine Months or More from Date of Issue

Trade DateAugust 12, 2026
Pricing Supplement No. 10642
Pricing Supplement DateAugust 12, 2026
Prospectus Supplement DateOctober 27, 2023
Base Prospectus DateOctober 24, 2023
Principal Amount$2,000,000.00
Issue Price100% of Principal Amount
Original Issue DateAugust 15, 2026
Maturity DateAugust 15, 2027
Interest Rate4.13% per annum
Regular Record DatesEach January 1 and July 1
Interest Payment DatesEach January 15 and July 15
Redemption DateNone
Agents Commission None
Form of Note: (Book-Entry or Certificated)
Certificated
Other TermsNone
Medium-Term Notes, Series D may be issued by the Company in an unlimited aggregate principal amount.

Validity of the Medium-Term Note

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ATTACHMENTS / EXHIBITS

ATTACHMENTS / EXHIBITS

EX-FILING FEES

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