Pegasystems (PEGA) COO/CFO trades stock, including 1,000-share sale under 10b5-1 plan

Rhea-AI Filing Summary

Pegasystems Inc. COO and CFO Kenneth Stillwell reported multiple equity transactions involving company stock. On March 1, 2026 and March 2, 2026, he acquired a total of 3,502 shares of common stock through the exercise or conversion of restricted stock units at $0.00 per share. On those same dates, 854 shares were disposed of to cover tax obligations at prices of $43.73 per share, and 1,000 shares were sold in an open-market transaction at $43.37 per share under a pre-arranged Rule 10b5-1 trading plan adopted on August 12, 2025. Following these transactions, he directly held 134,516 shares of common stock, with an additional 1,908 shares held indirectly for his children.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

STILLWELL KENNETH

(Last) (First) (Middle)

C/O PEGASYSTEMS INC.

225 WYMAN STREET, STE 300

(Street)

WALTHAM MA 02451

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
PEGASYSTEMS INC [ PEGA ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	COO, CFO

3. Date of Earliest Transaction (Month/Day/Year)
03/01/2026

4. If Amendment, Date of 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

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	03/01/2026		M		2,350	A	$0	135,218	D
Common stock	03/01/2026		F		573	D	$43.73	134,645	D
Common stock	03/02/2026		M		1,152	A	$0	135,797	D
Common stock	03/02/2026		F		281	D	$43.73	135,516	D
Common stock	03/02/2026		S		1,000(1)	D	$43.37	134,516	D
Common stock								1,908	I	Reporting Person's children

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 Securities Underlying Derivative Security (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: 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
Restricted Stock Units	$0	03/01/2026		M			2,350(2)	03/01/2023(3)	03/01/2027	Common stock	2,350	$0	9,404	D
Restricted Stock Units	$0	03/02/2026		M			1,152(2)	03/02/2022(3)	03/02/2026	Common stock	1,152	$0	0	D

Explanation of Responses:

1. Sold pursuant to a pre-arranged trading plan adopted by Mr. Stillwell August 12, 2025 under Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.

2. Each restricted stock unit represents the right to receive, following vesting, one share of common stock.

3. 20% of the restricted stock units vested on the Date Exercisable in Table II, and the remaining 80% vest in equal quarterly installments over the following four years.

Remarks:

	/s/ Ewelina Kemp, Attorney-in-Fact for Kenneth Stillwell	03/03/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transactions did Pegasystems (PEGA) executive Kenneth Stillwell report?

Kenneth Stillwell reported exercising restricted stock units into 3,502 Pegasystems common shares, disposing of 854 shares for taxes, and selling 1,000 shares in the open market. These transactions occurred on March 1 and March 2, 2026, and involved both acquisitions and dispositions.

How many Pegasystems (PEGA) shares did Kenneth Stillwell sell in the open market?

Kenneth Stillwell sold 1,000 Pegasystems common shares in an open-market transaction at a price of $43.37 per share. This sale was part of a pre-arranged Rule 10b5-1 trading plan adopted on August 12, 2025, according to the filing details.

Were Kenneth Stillwell’s Pegasystems (PEGA) stock sales under a 10b5-1 plan?

Yes, the Form 4 notes the 1,000-share open-market sale was made under a pre-arranged Rule 10b5-1 trading plan adopted by Kenneth Stillwell on August 12, 2025. Such plans allow scheduled trades regardless of subsequent corporate or market developments.

How many Pegasystems (PEGA) shares does Kenneth Stillwell hold after these transactions?

After the reported transactions, Kenneth Stillwell directly held 134,516 Pegasystems common shares. The filing also reports an additional 1,908 shares held indirectly for his children, reflecting both direct and family-related ownership positions as of the reported dates.

What types of Pegasystems (PEGA) equity awards did Kenneth Stillwell exercise?

Kenneth Stillwell exercised restricted stock units that converted into 3,502 Pegasystems common shares at $0.00 per share. Footnotes explain each unit represents one share upon vesting, with 20% vesting initially and the remaining 80% vesting in equal quarterly installments over four years.

Why were some of Kenneth Stillwell’s Pegasystems (PEGA) shares disposed of for taxes?

The filing identifies two transactions coded "F" as tax-withholding dispositions, where 854 Pegasystems shares were delivered at $43.73 per share. These shares were used to satisfy tax liabilities related to the exercise or vesting of restricted stock units, rather than discretionary open-market sales.