Pegasystems CAO sells 982 shares at $37.35

Pegasystems Inc. (PEGA) reported that Efstathios A. Kouninis, its SVP and Chief Accounting Officer, sold 982 shares of common stock on September 16, 2026, in a sale described as an open market or private transaction at $37.35 per share.

Available on EDGAR 09/17/2026 - 04:09 PM EDT Accepted by SEC EDGAR 09/17/2026 - 04:08 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Pegasystems Inc. (PEGA) reported that Efstathios A. Kouninis, its SVP and Chief Accounting Officer, sold 982 shares of common stock on September 16, 2026, in a sale described as an open market or private transaction at $37.35 per share. Following this transaction, he directly holds 1,009 shares of Pegasystems common stock, and no Rule 10b5-1 trading plan is reported for this sale.

Insider Trade Summary

Net Seller: 982 shares

Net Sell 1 txn

Insider KOUNINIS EFSTATHIOS A

Role SVP, Chief Accounting Officer

Sold 982 shs ($37K)

Type	Security	Shares	Price	Value
Sale	Common stock	982	$37.35	$37K

Holdings After Transaction: Common stock — 1,009 shares (Direct)

Key Figures

Shares sold: 982 shares Sale price per share: $37.35 per share Shares held after transaction: 1,009 shares

3 metrics

Shares sold 982 shares Common stock sale reported for September 16, 2026

Sale price per share $37.35 per share Price for the 982-share common stock sale on September 16, 2026

Shares held after transaction 1,009 shares Direct common stock holdings for Efstathios A. Kouninis after the sale

Key Terms

Rule 10b5-1, open market or private transaction, Chief Accounting Officer

3 terms

Rule 10b5-1 regulatory

"no Rule 10b5-1 trading plan is reported for this sale"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

open market or private transaction market

"Sale in open market or private transaction"

Chief Accounting Officer financial

"SVP and Chief Accounting Officer"

A chief accounting officer is a senior executive responsible for overseeing a company's financial records and ensuring all accounting practices are accurate and compliant with regulations. They play a key role in preparing financial reports that help investors understand the company's financial health, much like a trusted navigator guiding a ship through complex waters. Their work ensures transparency and trust in the company's financial information.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did PEGA report for Efstathios A. Kouninis?

Pegasystems reported that Efstathios A. Kouninis sold 982 shares of common stock on September 16, 2026, at $37.35 per share in an open market or private transaction, leaving him with 1,009 directly held shares afterward.

How many PEGASYSTEMS INC (PEGA) shares did the insider sell and at what price?

Efstathios A. Kouninis sold 982 PEGA shares at a price of $37.35 per share on September 16, 2026, in a transaction described as a sale in the open market or a private transaction.

What are the direct holdings of the PEGA chief accounting officer after this Form 4?

After the reported sale, Efstathios A. Kouninis directly holds 1,009 shares of Pegasystems Inc. common stock, as disclosed in the Form 4 insider transaction report.

Was the September 16, 2026 PEGA insider sale under a Rule 10b5-1 plan?

No. The filing’s Rule 10b5-1 checkbox is not marked, and no footnote indicates a trading plan, so the 982-share sale by Efstathios A. Kouninis is not reported as made under a Rule 10b5-1 plan.

What role does the insider in this PEGA Form 4 hold at the company?

The reporting person, Efstathios A. Kouninis, serves as Pegasystems Inc.’s Senior Vice President and Chief Accounting Officer, as identified in the Form 4 filing.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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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)
09/16/2026

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	09/16/2026		S		982	D	$37.35	1,009	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

Explanation of Responses:

Remarks:

	/s/ Kathryn Leach, Attorney-in-Fact for Efstathios A. Kouninis	09/17/2026
	** 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)