Pegasystems executive Leon Trefler exercises 1,176 RSUs

Pegasystems’ Chief of Clients and Markets reported RSU vesting into common shares with a portion of shares withheld or delivered to satisfy exercise price or tax obligations.

Rhea-AI Filing Summary

For PEGASYSTEMS INC (PEGA), Chief of Clients and Markets Leon Trefler reported an automatic exercise of 1,176 Restricted Stock Units into an equal number of common shares on September 1, 2026. In connection with this vesting, 463 common shares were delivered or withheld to cover the exercise price or tax liability. Each RSU represents the right to receive one share of common stock, with 20% vesting on March 1, 2023 and the remaining 80% vesting in equal quarterly installments over four years. No Rule 10b5-1 trading plan is reported.

Insider Trade Summary

1,176 shares exercised/converted

Exercise 3 txns

Insider Trefler Leon

Role Chief of Clients and Markets

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units F1, F2	1,176	$0.00	$0.00
Exercise	Common stock	1,176	$0.00	$0.00
Exercise Price or Tax Liability	Common stock	463	$36.81	$17K

Holdings After Transaction: Restricted Stock Units — 2,350 contracts (Direct); Common stock — 127,724 shares (Direct)

Footnotes (2)

1. F1. Each restricted stock unit represents the right to receive, following vesting, one share of common stock.
2. F2. 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.

Key Figures

RSUs exercised: 1,176 units Common shares acquired from RSU exercise: 1,176 shares Shares delivered or withheld for exercise price or tax liability: 463 shares +3 more

6 metrics

RSUs exercised 1,176 units Restricted Stock Units converted into common stock on September 1, 2026

Common shares acquired from RSU exercise 1,176 shares Common stock received upon RSU conversion on September 1, 2026

Shares delivered or withheld for exercise price or tax liability 463 shares Code F transaction on September 1, 2026

Reference share price for tax/exercise withholding $36.81 per share Price used for the 463-share payment of exercise price or tax liability

RSUs vested initially 20% Portion of RSUs vesting on March 1, 2023

Remaining RSU vesting period 4 years Remaining 80% vests in equal quarterly installments over four years

Key Terms

Restricted Stock Units, tax liability, Rule 10b5-1, vesting

4 terms

Restricted Stock Units financial

"Each restricted stock unit represents the right to receive, following vesting, one share"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

tax liability financial

"Payment of exercise price or tax liability by delivering or withholding securities"

Rule 10b5-1 regulatory

"Rule 10b5-1 checkbox is not marked as relying on a trading plan"

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.

vesting financial

"20% of the restricted stock units vested on the Date Exercisable in Table II"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

FAQ

What insider transaction did PEGA executive Leon Trefler report?

Leon Trefler reported the exercise of 1,176 Restricted Stock Units into 1,176 shares of Pegasystems common stock on September 1, 2026, reflecting scheduled vesting of equity compensation.

How many PEGA shares were withheld or delivered for taxes or exercise costs?

In connection with the RSU vesting, 463 shares of Pegasystems common stock were delivered or withheld to pay the exercise price or tax liability at a reference price of $36.81 per share.

What is the vesting schedule of Leon Trefler’s PEGA RSUs in this Form 4?

For the reported RSU award, 20% of the units vested on March 1, 2023, and the remaining 80% vest in equal quarterly installments over the following four years, each unit converting into one share of common stock upon vesting.

Does this PEGA Form 4 indicate a Rule 10b5-1 trading plan?

No. The Form 4’s Rule 10b5-1 checkbox is not marked as relying on a trading plan, and the footnotes do not state that these transactions were made pursuant to a Rule 10b5-1 or similar pre-arranged trading plan.

What types of securities are involved in Leon Trefler’s PEGA filing?

The filing involves Restricted Stock Units that were exercised or converted into 1,176 shares of Pegasystems common stock, plus a separate non-derivative transaction where 463 common shares were delivered or withheld for exercise price or tax obligations.

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Available on EDGAR 09/02/2026 - 04:14 PM Accepted by SEC EDGAR 09/02/2026 - 04:14 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^*

Trefler Leon

(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)
	Chief of Clients and Markets

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/01/2026

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	09/01/2026		M		1,176	A	$0	128,187	D
Common stock	09/01/2026		F		463	D	$36.81	127,724	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
Restricted Stock Units	$0	09/01/2026		M			1,176(1)	03/01/2023(2)	03/01/2027	Common stock	1,176	$0	2,350	D

Explanation of Responses:

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

2. 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 Leon Trefler	09/02/2026
	** 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)