# EDGAR Filing Document

**Accession Number:** 0001032235
**File Stem:** 0001032235-25-000020
**Filing Date:** 2025-11
**Character Count:** 7968
**Document Hash:** cbb5c8dd546a141f22cfb600a3b5cf89
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001032235-25-000020.hdr.sgml**: 20251112

**ACCESSION NUMBER**: 0001032235-25-000020

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13G/A

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20251112

**DATE AS OF CHANGE**: 20251112

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** PEGASYSTEMS INC
- **CENTRAL INDEX KEY:** 0001013857
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-COMPUTER PROCESSING & DATA PREPARATION [7374]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 042787865
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-49173
- **FILM NUMBER:** 251473002

**BUSINESS ADDRESS:**
- **STREET 1:** 225 WYMAN STREET
- **STREET 2:** STE 300
- **CITY:** WALTHAM
- **STATE:** MA
- **ZIP:** 02451-1293
- **BUSINESS PHONE:** 6173749600

**MAIL ADDRESS:**
- **STREET 1:** 225 WYMAN STREET
- **STREET 2:** STE 300
- **CITY:** WALTHAM
- **STATE:** MA
- **ZIP:** 02451-1293
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** TREFLER ALAN
- **CENTRAL INDEX KEY:** 0001032235

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13G/A

**MAIL ADDRESS:**
- **STREET 1:** 225 WYMAN STREET
- **STREET 2:** STE 300
- **CITY:** WALTHAM
- **STATE:** MA
- **ZIP:** 02451

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

## SCHEDULE 13G

### Under the Securities Exchange Act of 1934

**(Amendment No. 26)**

**Issuer:** Pegasystems Inc.

**Title of Class of Securities:** Common Stock, $.01 par value per share

**CUSIP Number:** 705573103

**Date of Event Which Requires Filing of this Statement:** 09/30/2025

**Check the appropriate box to designate the rule pursuant to which this Schedule is filed:**

- [ ] Rule 13d-1(b)

- [ ] Rule 13d-1(c)

- [ ] Rule 13d-1(d)

---

| 1. | Names of Reporting Persons<br>ALAN TREFLER | Names of Reporting Persons<br>ALAN TREFLER |
|:---|:---|:---|:---|
| 2. | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] | Check the Appropriate Box if a Member of a Group (See Instructions)<br>(a) [ ] (b) [ ] |
| 3. | SEC Use Only | SEC Use Only |
| 4. | Citizenship or Place of Organization<br>X1 | Citizenship or Place of Organization<br>X1 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 5. | Sole Voting Power<br>66165267.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 6. | Shared Voting Power<br>13032110.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 7. | Sole Dispositive Power<br>66165267.00 |
| Number of<br>Shares<br>Beneficially<br>Owned by<br>Each<br>Reporting<br>Person<br>With | 8. | Shared Dispositive Power<br>13032110.00 |
| 9. | Aggregate Amount Beneficially Owned by Each Reporting Person<br>79197377.00 | Aggregate Amount Beneficially Owned by Each Reporting Person<br>79197377.00 |
| 10. | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] | Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ] |
| 11. | Percent of Class Represented by Amount in Row (9)<br>46.0% | Percent of Class Represented by Amount in Row (9)<br>46.0% |
| 12. | Type of Reporting Person (See Instructions)<br>IN | Type of Reporting Person (See Instructions)<br>IN |

**Comment for Type of Reporting Person:** Sole voting and dispositive power consists of (1) 44,934,364 shares of Common Stock held by Mr. Trefler, individually; (2) 10,879,283 shares held by the Alan N. Trefler Grantor Retained Annuity Trust I of 2024, of which Mr. Trefler is the sole trustee; (3) 8,703,426 shares held by the Alan N. Trefler Grantor Retained Annuity Trust II of 2024, of which Mr. Trefler is the sole trustee; and (4) 1,648,194 shares that Mr. Trefler has the right to acquire within 60 days of September 30, 2025 through the vesting or exercise of equity compensation awards.

Shared voting and dispositive power consists of (1) 10,876,525 shares held by the Alan N. Trefler Irrevocable Non-GST Trust of 2022, of which Daniel Sherman and Pamela Trefler are the trustees and of which Mr. Trefler has ability to appoint and remove trustees; (2) 84,000 shares held by the Trefler Foundation, of which Mr. Trefler is a trustee and shares voting and dispositive power over these shares, but has no pecuniary interest in these shares; and (3) 2,071,585 shares held by The Trefler 2025 Trust, of which Goldman Sachs Trust Company of Delaware is the administrative trustee and of which Mr. Trefler has ability to appoint and remove trustees and distribution advisors.

---

**Item 1(a). Name of Issuer:**
Pegasystems Inc.

**Item 1(b). Address of Issuer's Principal Executive Offices:**
225 Wyman Street, Ste 300,  Waltham, MA, 02451

**Item 2(a). Name of Person Filing:**
Alan Trefler

**Item 2(b). Address of Principal Business Office:**
c/o Pegasystems Inc., 225 Wyman Street, Ste 300, Waltham, MA 02451

**Item 2(c). Citizenship:**
United States

**Item 2(d). Title of Class of Securities:**
Common Stock, $.01 par value per share

**Item 2(e). CUSIP Number:**
705573103

**Item 3. If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:**

(a) [ ] Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).

(b) [ ] Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).

(c) [ ] Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).

(d) [ ] Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8).

(e) [ ] An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);

(f) [ ] An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);

(g) [ ] A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);

(h) [ ] A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i) [ ] A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j) [ ] A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), if filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:

(k) [ ] Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).

**Item 4. Ownership:**

**(a) Amount beneficially owned:**

79,197,377 shares

**(b) Percent of class:**

46.0

**(c) Number of shares as to which the person has:**

**(i) Sole power to vote or to direct the vote:**

66,165,267 shares

**(ii) Shared power to vote or to direct the vote:**

13,032,110 shares

**(iii) Sole power to dispose or to direct the disposition of:**

66,165,267 shares

**(iv) Shared power to dispose or to direct the disposition of:**

13,032,110 shares

**Item 5. Ownership of Five Percent or Less of a Class.**

[x] If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following.

**Item 6. Ownership of More than 5 Percent on Behalf of Another Person.**

Not Applicable

**Item 7. Identification and Classification of the Subsidiary**

Not Applicable

**Item 8. Identification and Classification of Members of the Group**

Not Applicable

**Item 9. Notice of Dissolution of Group**

Not Applicable

**Item 10. Certification:**

—

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**ALAN TREFLER**

**Date:** 11/12/2025

**By:** /s/ Alan Trefler

**Name & Title:** Alan Trefler