Pegasystems CAO exercises 2,500 options, sells 1,063

PEGASYSTEMS INC’s chief accounting officer exercised options for 2,500 shares and disposed of 2,500 shares through withholding and open-market sale.

Rhea-AI Filing Summary

PEGASYSTEMS INC (PEGA) reported that Efstathios A. Kouninis, its SVP and Chief Accounting Officer, exercised options on September 3, 2026 to acquire 2,500 shares of common stock at an exercise price of $16.95 per share. The options, which vest in equal quarterly amounts over four years beginning February 2, 2023, left him with 6,800 options remaining after the exercise. Of the newly acquired shares, 1,437 shares were delivered or withheld to pay the exercise price or related tax liability at $38.75 per share, and 1,063 shares were sold at $38.75 per share. No transactions are reported as being made under a Rule 10b5-1 trading plan.

Insider Trade Summary

Exercise and sale activity reported; no spread calculated

Exercise and Sale 4 txns

Insider KOUNINIS EFSTATHIOS A

Role SVP, Chief Accounting Officer

Sold 1,063 shs ($41K)

Approx. gross sale proceeds $41K

Approx. exercise cost $42K

Type	Security	Shares	Price	Value
Exercise	Stock Options F1	2,500	$0.00	$0.00
Exercise	Common stock	2,500	$16.95	$42K
Exercise Price or Tax Liability	Common stock	1,437	$38.75	$56K
Sale	Common stock	1,063	$38.75	$41K

Holdings After Transaction: Stock Options — 6,800 contracts (Direct); Common stock — 1,164 shares (Direct)

Footnotes (1)

1. F1. Options will vest in equal quarterly amounts over a four year period with the first vest occurring on February 2, 2023.

Key Figures

Options exercised: 2,500 shares Option exercise price: $16.95 per share Shares withheld or delivered for exercise price or tax liability: 1,437 shares +4 more

7 metrics

Options exercised 2,500 shares Stock options on PEGASYSTEMS INC common stock exercised on September 3, 2026

Option exercise price $16.95 per share Exercise price for 2,500 options exercised on September 3, 2026

Shares withheld or delivered for exercise price or tax liability 1,437 shares Common shares disposed of at $38.75 per share on September 3, 2026

Shares sold 1,063 shares Common shares sold at $38.75 per share on September 3, 2026

Sale and withholding price $38.75 per share Price for both the withheld/delivered shares and the sale of 1,063 shares

Options remaining after transaction 6,800 options Stock options remaining held directly after the September 3, 2026 exercise

Option vesting schedule Four years, quarterly vesting Options vest in equal quarterly amounts with first vest on February 2, 2023

FAQ

What did PEGA’s chief accounting officer do in this Form 4 filing?

The chief accounting officer, Efstathios A. Kouninis, exercised options for 2,500 shares of PEGASYSTEMS INC common stock at $16.95 per share on September 3, 2026, then had shares withheld or delivered and sold in connection with that exercise.

How many PEGA shares did the insider sell or dispose of?

On September 3, 2026, Efstathios A. Kouninis had 1,437 shares delivered or withheld to pay the exercise price or tax liability at $38.75 per share and separately sold 1,063 shares of PEGASYSTEMS INC common stock at $38.75 per share.

At what price were the PEGA stock options exercised and the shares sold?

The options were exercised at an exercise price of $16.95 per share. Shares used to cover the exercise price or taxes and shares sold were transacted at $38.75 per share of PEGASYSTEMS INC common stock.

How many options does the PEGA insider still hold after these transactions?

After exercising options for 2,500 shares on September 3, 2026, Efstathios A. Kouninis holds 6,800 stock options on PEGASYSTEMS INC common stock, as reported in the filing.

Were the PEGA insider’s transactions made under a Rule 10b5-1 trading plan?

No. The filing indicates that no Rule 10b5-1 trading plan is reported for the transactions by Efstathios A. Kouninis on September 3, 2026.

How do the PEGA options held by the insider vest?

The options reported in the filing vest in equal quarterly amounts over four years, with the first vesting date on February 2, 2023, according to the footnote disclosure.

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Available on EDGAR 09/03/2026 - 05:19 PM Accepted by SEC EDGAR 09/03/2026 - 05:03 PM Learn about SEC filing dates

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

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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 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^*

KOUNINIS EFSTATHIOS A

(Last) (First) (Middle)

C/O PEGASYSTEMS INC.

225 WYMAN STREET, STE 300

(Street)

WALTHAM MASSACHUSETTS 02451

(City) (State) (Zip)

UNITED STATES

(Country)

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)
	SVP, Chief Accounting Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/03/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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	09/03/2026		M		2,500	A	$16.95	3,664	D
Common stock	09/03/2026		F		1,437	D	$38.75	2,227	D
Common stock	09/03/2026		S		1,063	D	$38.75	1,164	D

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
Stock Options	$16.95	09/03/2026		M			2,500	02/02/2023(1)	11/02/2032	Common stock	2,500	$0	6,800	D

Explanation of Responses:

1. Options will vest in equal quarterly amounts over a four year period with the first vest occurring on February 2, 2023.

Remarks:

	/s/ Ewelina Kemp, Attorney-in-Fact for Efstathios A. Kouninis	09/03/2026
	** 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.
* Form 4: SEC 1474 (03-26)