Amendment to Stockholder Rights Agreement, dated as of October 2, 2023, between Blackbaud, Inc. and Equiniti Trust Company, LLC (f/k/a American Stock Transfer & Trust Company, LLC), as Rights Agent

This AMENDMENT TO THE STOCKHOLDER RIGHTS AGREEMENT (this “Amendment”) is entered into as of October 2, 2023, by and between Blackbaud, Inc., a Delaware corporation (the “Company”), and Equiniti Trust Company, LLC (f/k/a American Stock Transfer & Trust Company, LLC), a New York limited liability trust company (the “Rights Agent”), and amends that certain Stockholder Rights Agreement, dated as of October 7, 2022, by and between the Company and the Rights Agent (the “Rights Agreement”). All capitalized terms used herein and not otherwise defined herein shall have the meaning(s) ascribed to them in the Rights Agreement.

WHEREAS, the Company and the Rights Agent are parties to the Rights Agreement; and

WHEREAS, pursuant to Section 27 of the Rights Agreement, the Company and the Rights Agent desire to amend the Rights Agreement as set forth in this Amendment.

NOW, THEREFORE, in consideration of the promises and the mutual agreements herein set forth, the parties hereby agree as follows:

1.    Amendment of Section 7(a). Section 7(a) of the Rights Agreement is hereby amended and restated to read in its entirety as follows:

“(a) Subject to Section 7(e), the registered holder of any Rights Certificate may exercise the Rights evidenced thereby (except as otherwise provided herein including the restrictions on exercisability set forth in Section 7(c), Section 9(c), Section 11(a)(iii) and Section 23(a)) in whole or in part at any time after the Distribution Time upon surrender of the Rights Certificate, with the form of election to purchase and the certificate on the reverse side thereof properly completed and duly executed, to the Rights Agent at the principal office or offices of the Rights Agent designated for such purpose, accompanied by a signature guarantee and such other documentation as the Rights Agent may reasonably request together with payment of the aggregate Exercise Price with respect to the total number of one one-thousandths of a share of Preferred Stock (or Common Stock, other securities, cash or other assets, as the case may be) as to which such surrendered Rights are then exercisable, at or prior to the earliest of (i) the Close of Business on October 2, 2024, or such later date as may be established by the Board as long as the extension is submitted to the stockholders of the Company for ratification at the next annual meeting of stockholders succeeding such extension (the “Final Expiration Time”), (ii) the time at which the Rights are redeemed as provided in Section 23, (iii) the time at which such Rights are exchanged pursuant to Section 24 or (iv) the

closing of any merger or other acquisition transaction involving the Company pursuant to an agreement of the type described in Section 13(f), at which time, the Rights are terminated (the earliest of (i), (ii), (iii) and (iv) being herein referred to as the “Expiration Time”).”

2.    Agreement as Amended. The term “Agreement” as used in the Rights Agreement shall be deemed to refer to the Rights Agreement as amended. Except as set forth herein, the Rights Agreement shall remain in full force and effect and otherwise shall be unaffected hereby, and each of the Company and the Rights Agent shall continue to be subject to its terms and conditions.

3.    Severability. If any term, provision, covenant or restriction of this Amendment is held by a court of competent jurisdiction or other authority to be invalid, void or unenforceable, the remainder of the terms, provisions, covenants and restrictions of this Amendment shall remain in full force and effect and shall in no way be affected, impaired or invalidated; provided, however, that notwithstanding anything in this Amendment to the contrary, if any such term, provision, covenant or restriction is held by such court or authority to be invalid, void or unenforceable and the Board determines in its good faith judgment that severing the invalid language from this Amendment would adversely affect the purpose or effect of this Amendment, the right of redemption set forth in Section 23 of the Rights Agreement shall be reinstated and shall not expire until the Close of Business on the tenth (10th) day following the date of such determination by the Board.

4.    Governing Law. This Amendment shall be deemed to be a contract made under the laws of the State of Delaware and for all purposes shall be governed by and construed in accordance with the laws of such State applicable to contracts made and to be performed entirely within such State.

5.    Counterparts. This Amendment may be executed in any number of counterparts and each of such counterparts shall for all purposes be deemed to be an original, and all such counterparts shall together constitute but one and the same instrument.  Delivery of an executed signature page of this Amendment by facsimile or other customary means of electronic transmission (e.g., “pdf”) shall be as effective as delivery of a manually executed counterpart hereof.

6.    Descriptive Headings. Descriptive headings of the several Sections of this Amendment are inserted for convenience only and shall not control or affect the meaning or construction of any of the provisions hereof.

IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be duly executed as of the day and year first above written.