Supplemental Prospectus (Form 424B3)

Rule 424 (b) (3)

Registration No. 333-249702

CUSIP #: 63743HEY4

CALCULATION OF REGISTRATION FEE

Title of Each Class of Securities Offered	Maximum Aggregate Offering Price	Amount of Registration Fee(1)(2)
Senior Debt Security	$400,000,000	$37,080.00

(1) Calculated in accordance with Rule 457(r) of the Securities Act of 1933.

(2) The amount in this column has been transmitted to the SEC in connection with the securities offered by means of this pricing supplement.

TRADE DATE: October 18, 2021

SETTLEMENT DATE: October 25, 2021

PRICING SUPPLEMENT NO. D1002 DATED October 18, 2021

TO PROSPECTUS SUPPLEMENT DATED October 30, 2020

AND BASE PROSPECTUS DATED October 28, 2020

NATIONAL RURAL UTILITIES COOPERATIVE FINANCE CORPORATION

Medium-Term Notes, Series D

With Maturities of Nine Months or More from Date of Issue Fixed Rate Notes

Principal Amount:	$400,000,000
Issue Price:	99.909% of Principal Amount
Original Issue Date:	October 25, 2021
Maturity Date:	October 18, 2024
Interest Rate:	1.000% per annum
Interest Payment Dates:	Each April 18 and October 18, and the maturity date, commencing April 18, 2022
Optional Redemption:	The issuer may redeem the notes at any time in whole or in part, at a "make-whole" redemption price equal to the greater of (1) 100% of the principal amount being redeemed or (2) the sum of the present values of the remaining scheduled payments of principal and interest (other than accrued interest) on the notes being redeemed, discounted to the redemption date on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate, plus 5 basis points for the notes plus in each case of (1) and (2) above, accrued interest to, but excluding, the redemption date.
"Comparable Treasury Issue" means the United States Treasury security selected by an Independent Investment Banker as having a maturity comparable to the remaining term of the notes being redeemed that would be utilized, at the time of selection and in accordance with customary financial practice, in pricing new issues of corporate debt securities of comparable maturity to the remaining term of such notes.
"Comparable Treasury Price" means with respect to any redemption date, (A) the average of the Reference Treasury Dealer Quotations for the redemption date, after excluding the highest and lowest Reference Treasury Dealer Quotations for that redemption date, or (B) if we obtain fewer than four Reference Treasury Dealer Quotations, the average of all the Reference Treasury Dealer Quotations obtained.
"Independent Investment Banker" means one of the Reference Treasury Dealers appointed by the trustee after consultation with the issuer.
"Reference Treasury Dealer" means (1) each of RBC Capital Markets, LLC and Scotia Capital (USA) Inc., or their respective affiliates or successors; provided, however, that if any of them ceases to be a primary U.S. Government securities dealer in the United States, the issuer will appoint another primary U.S. Government securities dealer as a substitute, (2) one primary U.S. Government securities dealer selected by each of PNC Capital Markets LLC and U.S. Bancorp Investments, Inc. and (3) any other primary U.S. Government securities dealers selected by the issuer.
"Reference Treasury Dealer Quotations" means, for each Reference Treasury Dealer and any redemption date, the average, as determined by the trustee, of the bid and ask prices for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) quoted in writing to the trustee by the Reference Treasury Dealer at 5:00 p.m. New York City time on the third business day preceding the date notice is provided to each holder of the notes being redeemed.
"Treasury Rate" means, for any redemption date, the rate per annum equal to the semi-annual equivalent yield to maturity of the Comparable Treasury Issue, assuming a price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) equal to the Comparable Treasury Price for the redemption date.
Payment at Maturity:	The payment at maturity will be 100% of the Principal Amount plus accrued and unpaid interest, if any
Agent's Discount or Commission:	0.20%
Agents:	RBC Capital Markets, LLC
PNC Capital Markets LLC
Scotia Capital (USA) Inc.
U.S. Bancorp Investments, Inc.
MUFG Securities Americas Inc.
KeyBanc Capital Markets Inc.
Mizuho Securities USA LLC
Regions Securities LLC
Truist Securities, Inc.
Capacity:	Principal
Form of Note: (Book-Entry or Certificated)	Book-Entry
Other Terms:	None
Medium-Term Notes, Series D may be issued by the Company in an unlimited aggregate principal amount.

It is expected that delivery of the notes will be made against payment therefor on or about October 25, 2021 which is the fifth trading day following the date hereof (such settlement cycle being referred to as T+5). Purchasers of notes should note that the ability to settle secondary market trades of the notes effected on the date of pricing or the next two succeeding business days may be affected by the T+5 settlement. Accordingly, purchasers who wish to trade the notes on the date of pricing or the

next two succeeding business days will be required to specify an alternative settlement cycle at the time of any such trade to prevent a failed settlement and should consult their own legal advisors.

Validity of the Medium-Term Note

In the opinion of Hogan Lovells US LLP, as counsel to the Company, when the notes offered by this pricing supplement have been executed and issued by the Company and authenticated by the trustee pursuant to the indenture, and delivered against payment as contemplated herein, such notes will constitute valid and binding obligations of the Company, subject to the effect of (a) bankruptcy, insolvency, reorganization, receivership, moratorium and other laws affecting creditors' rights (including, without limitation, the effect of statutory and other law regarding fraudulent conveyances, fraudulent transfers and preferential transfers), and (b) the exercise of judicial discretion and the application of principles of equity, good faith, fair dealing, reasonableness, conscionability and materiality (regardless of whether the applicable agreements are considered in a proceeding in equity or at law).

This opinion is based as to matters of law solely on applicable provisions of the following, as currently in effect: (i) the District of Columbia General Cooperative Association Act of 2010 and (ii) the laws of the State of New York (but not including any laws, statutes, ordinances, administrative decisions, rules or regulations of any political subdivision below the state level). In addition, this opinion is subject to customary assumptions about the trustee's authorization, execution and delivery of the indenture and its authentication of the notes and the validity, binding nature and enforceability of the indenture with respect to the trustee, all as stated in the letter of such counsel dated October 30, 2020, which has been filed as an exhibit to a Current Report on Form 8-K by the Company on October 30, 2020.

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