通用动力美股招股说明书(2026-08-04版)

Up to 1,010,925 Shares of Common Stock Acquired Under theGeneral Dynamics Corporation 401(k) Plan 6.0General Dynamics Corporation 401(k) Plan for Represented Employees Rescission OfferEXPIRATION DATE: SEPTEMBER8, 2026 We are offering, under the terms and conditions described in this prospectus supplement, to rescind (the “Rescission Offer”) the acquisition of upto 1,010,925 shares of our common stock (the “Shares”), $1.00 par value, by persons who are deemed to have acquired such Shares through the GeneralDynamics Stock Fund (the “Stock Fund”) pursuant to the General Dynamics Corporation 401(k) Plan 6.0 (the “6.0 Plan”) and the General DynamicsCorporation 401(k) Plan for Represented Employees (the “Represented Employees Plan” and, together with the 6.0 Plan, collectively, the “Plans” andeach individually a “Plan”) between July1, 2025 and June30, 2026 (the “Purchase Period”). See “The Rescission Offer — The Plans” for additionalinformation. The Rescission Offer applies to Shares purchased during the Purchase Period pursuant to any of the Plans. If you purchased Shares pursuant to thePlans during the Purchase Period and accept the Rescission Offer, you will receive: •For such Shares you have already sold at a loss, an amount equal to the excess of the amount you paid for such Shares over the proceedsfrom your sale of the Shares, plus interest (i)on the amount you paid for the Shares from the date of purchase through the date of sale and(ii)on the loss realized from the sale of the Shares from (but excluding) the date of sale through the date that payment is made by us,minus the value of any dividends or distributions on such Shares.•For such Shares you hold as of the Expiration Date (as defined below), in exchange for such Shares, the amount you paid for such Sharesplus interest from the date of the purchase through the date the payment is made by us, minus the value of any dividends or distributionson such Shares. However, we will not purchase the Shares if the amount you paid for all Shares you purchased during the Purchase Period,plus interest through the Expiration Date, minus the value of any dividends or distributions on such Shares, is less than the fair marketvalue of all such Shares on the Expiration Date of this Rescission Offer based on the closing price of a share of our common stock on theNew York Stock Exchange on the Expiration Date. Although this prospectus supplement uses the term “interest” when describing the calculation of the Rescission Offer price, the term is onlyintended to describe the method used to calculate the payment amount, and the payment is not considered interest for U.S. federal income tax purposes.Instead, the entire amount will be considered as a payment for the sale of your Shares. The Rescission Offer will expire at 4:00 PM, Eastern time, onSeptember8, 2026(the “Expiration Date”). Our information agent for theRescission Offer is D.F. King& Co., Inc. (“D.F. King”). Please contact D.F. King with any questions regarding the Rescission Offer, Monday throughFriday, between the hours of 9:00 AM and 9:00 PM, Eastern time using the following information: D.F. King& Co., Inc.28 Liberty Street, 53rd FloorNew York, New York 10005Local: (646) 989-7983Toll-Free: (800) 370-1749E-mail: generaldynamics@dfking.com Our common stock is listed on the New York Stock Exchange (“NYSE”) and trades under the ticker symbol “GD.” Our principal executive officesare located at 11011 Sunset Hills Road, Reston, Virginia. The last reported sale price of our common stock (as reported on the NYSE) on July31, 2026was $383.42 per share. You should obtain trading prices for our common stock prior to deciding whether or not to accept the Rescission Offer. You may elect to accept the Rescission Offer by submitting a Rescission Offer Acceptance Form to Computershare Trust Company, N.A.and Computershare Inc. (“Computershare”), our transfer agent for the Rescission Offer, on or before the Expiration Date as set forth in thisprospectus supplement and in accordance with the instructions set forth in the Rescission Offer Acceptance Form. All persons accepting theRescission Offer must also submit with the Rescission Offer Acceptance Form a download of all of their GD Stock Fund transaction history,which may be obtained by following the steps described in “Questions and Answers About the Rescission Offer — Where can I obtain purchaseand sales history about my Shares?”. If you are accepting the Rescission Offer with respect to Shares you own as of the Expiration Date andsuch Shares are held under a Plan as of the Expiration Date, you do not need to take additional action to deliver such Shares once you havesubmitted a valid Rescission Offer Acceptance Form and GD Stock Fund transaction history. If you are accepting the Rescission Offer withrespect to Shares that, as of the Expiration Date, you own and sold or hold outside a Plan through a broker, individual retirement arrangement(“IRA”) custodian, another ta