Statement of Changes in Beneficial Ownership (Form 4)

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN 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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(Print or Type Responses)

1. Name and Address of Reporting Person * Nathaniel Sean 2. Issuer Name and Ticker or Trading Symbol Upland Software, Inc. [UPLD] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) CEO and President (Last) (First) (Middle) 900 S. CAPITAL OF TEXAS HWY, LAS CIMAS IV, SUITE 300 3. Date of Earliest Transaction (Month/Day/Year) 06/04/2026 (Street) AUSTIN, TX 78746 4. If Amendment, Date 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 (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 06/04/2026 A 500,000(1) A $ 0 520,751 D

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Performance-based Restricted Stock Unit June 2026

$ 0

06/04/2026

A

133,333

(2)

05/01/2029

Common Stock

133,333

$ 0

133,333

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Nathaniel Sean 900 S. CAPITAL OF TEXAS HWY LAS CIMAS IV, SUITE 300 AUSTIN, TX 78746			CEO and President

Signatures

/s/ Michael D. Hill (as attorney-in-fact for S. Nathaniel)		06/08/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	The restricted stock units vest in twelve equal quarterly installments starting on the Vesting Commencement Date of June 16, 2026, provided that the participant continues to be a service provider through each such vesting date. Notwithstanding the foregoing, in the event of the participant's termination by the Company for any reason other than cause or if participant leaves for Good Reason after a Change in Control (as defined in the Plan), then 100% of the restricted stock units shall become fully vested.
(2)	Performance Stock Units ("PSUs") may vest at target amount of 133,333 and up to a maximum number of shares of 500,000 upon the achievement of the stock price hurdles for thirty (30) consecutive trading days immediately preceding such date during the three-year performance period beginning on May 1, 2026 and ending on May 1, 2029, the Performance Period. PSUs may vest as follows a) 133,333 shares at $2.00, b) 24,445 shares at $2.20, c) 24,444 shares at $2.40, d) 24,445 shares at $2.60, e) 24,444 shares at $2.80, f) 24,445 shares at $3.00, g) 24,444 shares at $3.20, h) 24,445 shares at $3.40, i) 24,444 shares at $3.60, j) 24,445 shares at $3.80, k) 24,444 shares at $4.00, l) 24,445 shares at $4.20, m) 24,444 shares at $4.40, n) 24,445 shares at $4.60, o) 24,444 shares at $4.80, and p) 24,444 shares at $5.00.

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