Pegasystems officer plans $36,938 stock sale

Rhea-AI Filing Summary

PEGASYSTEMS INC (PEGA) received a Rule 144 notice from officer Efstathios A. Kouninis covering a proposed sale of 1,012 shares of common stock on 08/31/2026, to be issued via exercise of options under a registered plan. The filing also lists several smaller open-market sales in the prior three months.

Key Figures

Shares to be sold: 1,012 shares Aggregate market value of shares to be sold: $36,938.00 Shares sold on 08/10/2026: 860 shares +5 more

8 metrics

Shares to be sold 1,012 shares Proposed common stock sale dated 08/31/2026 under Rule 144

Aggregate market value of shares to be sold $36,938.00 Value associated with 1,012 common shares in the Form 144

Shares sold on 08/10/2026 860 shares Past three-month sale of Pegasystems common stock

Proceeds on 08/10/2026 sale $28,466.00 Dollar amount reported for 860-share sale on 08/10/2026

Shares sold on 08/07/2026 860 shares Past three-month sale of Pegasystems common stock

Shares sold on 06/16/2026 750 shares Past three-month sale of Pegasystems common stock

Proceeds on 06/16/2026 sale $24,235.35 Dollar amount reported for 750-share sale on 06/16/2026

Shares sold on 06/01/2026 750 shares Past three-month sale of Pegasystems common stock

Key Terms

Rule 144, Exercise of Options Under a Registered Plan, Aggregate market value, Executive Financial Services

4 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Exercise of Options Under a Registered Plan financial

"Common | 08/31/2026 | Exercise of Options Under a Registered Plan |"

Aggregate market value financial

"Common | ... | 36938.00 | 164404945 | 08/31/2026 |"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

Executive Financial Services financial

"Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza"

FAQ

Who is selling PEGASYSTEMS INC (PEGA) shares in this Form 144?

The Form 144 lists Efstathios A. Kouninis, an officer of Pegasystems Inc., as the person for whose account the securities are to be sold. The filing describes planned and recent sales of the company’s common stock under Rule 144.

How many PEGASYSTEMS INC (PEGA) shares are proposed to be sold under this Form 144?

The notice covers a proposed sale of 1,012 shares of Pegasystems Inc. common stock. These shares are to be acquired through the exercise of options under a registered plan, with a listed aggregate market value of $36,938.00 as of the filing details.

What is the planned sale date and method for the PEGA shares in this Form 144?

The proposed transaction is dated 08/31/2026. The shares are to be obtained via exercise of options under a registered plan, with the form indicating the consideration as cash and identifying Morgan Stanley Smith Barney LLC Executive Financial Services as the broker.

What PEGA share sales has Efstathios A. Kouninis made in the past three months?

The filing lists four prior sales of Pegasystems common stock: 750 shares on 06/01/2026, 750 shares on 06/16/2026, 860 shares on 08/07/2026, and 860 shares on 08/10/2026, each with corresponding dollar amounts reported.

On which market are the PEGASYSTEMS INC (PEGA) shares in this Form 144 listed?

The Form 144 identifies the market for the Pegasystems Inc. common stock involved in this notice as NASDAQ. This relates to the common shares referenced in both the proposed sale and the prior three-month transaction history.

Which broker is named for the proposed PEGA share sale?

The proposed sale of Pegasystems Inc. common stock is associated with Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, 8th Floor, New York, NY 10004, as indicated in the securities information section of the Form 144.

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

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Available on EDGAR 08/31/2026 - 04:04 PM Accepted by SEC EDGAR 08/31/2026 - 04:03 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001353196
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	PEGASYSTEMS INC.
SEC File Number	001-11859
Address of Issuer	225 WYMAN STREET STE 300 WALTHAM MASSACHUSETTS 02451-1293
Phone	6173749600
Name of Person for Whose Account the Securities are To Be Sold	EFSTATHIOS A KOUNINIS
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	1012	36938.00	164404945	08/31/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	08/31/2026	Exercise of Options Under a Registered Plan	Issuer			1012	08/31/2026	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
EFSTATHIOS A KOUNINIS 225 Wyman Street Waltham MA 02451	Common	08/10/2026	860	28466.00
EFSTATHIOS A KOUNINIS 225 Wyman Street Waltham MA 02451	Common	08/07/2026	860	27778.00
EFSTATHIOS A KOUNINIS 225 Wyman Street Waltham MA 02451	Common	06/16/2026	750	24235.35
EFSTATHIOS A KOUNINIS 225 Wyman Street Waltham MA 02451	Common	06/01/2026	750	27742.50

144: Remarks and Signature

Remarks
Date of Notice	08/31/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Efstathios Kouninis
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)