Updated Jul 16, 2026
Trefler Leon has filed 3 SEC Form 4 filings across 1 company in the last 90 days — selling. Lifetime open-market sales: $1.16M.

Leon Trefler serves as the Chief of Clients and Markets at Pegasystems Inc., a company specializing in customer engagement and business process management solutions. He has been involved in various roles within the company, contributing to its focus on enterprise clients in sectors such as finance and healthcare.
| Role | Chief of Clients and Markets |
|---|---|
| Notability | 20/100 |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-06-09 | PEGA | PEGASYSTEMS INC | F — Tax withholding / forfeiture | 1.0K | $34.71 | $36K |
| 2026-06-09 | PEGA | PEGASYSTEMS INC | M — Option exercise | 2.7K | $0.00 | |
| 2026-06-08 | PEGA | PEGASYSTEMS INC | F — Tax withholding / forfeiture | 866 | $35.44 | $31K |
| 2026-06-08 | PEGA | PEGASYSTEMS INC | M — Option exercise | 2.2K | $0.00 | |
| 2026-06-08 | PEGA | PEGASYSTEMS INC | F — Tax withholding / forfeiture | 636 | $35.11 | $22K |
| 2026-06-08 | PEGA | PEGASYSTEMS INC | M — Option exercise | 1.6K | $0.00 | |
| 2026-06-02 | PEGA | PEGASYSTEMS INC | F — Tax withholding / forfeiture | 463 | $35.73 | $17K |
| 2026-06-02 | PEGA | PEGASYSTEMS INC | M — Option exercise | 1.2K | $0.00 | |
| 2026-03-12 | PEGA | PEGASYSTEMS INC | S — Open-market sale | 6.7K | $44.76 | $300K |
| 2026-03-10 | PEGA | PEGASYSTEMS INC | F — Tax withholding / forfeiture | 648 | $47.24 | $31K |
| 2026-03-10 | PEGA | PEGASYSTEMS INC | M — Option exercise | 2.7K | $0.00 | |
| 2026-03-09 | PEGA | PEGASYSTEMS INC | F — Tax withholding / forfeiture | 537 | $47.05 | $25K |
| 2026-03-09 | PEGA | PEGASYSTEMS INC | M — Option exercise | 2.2K | $0.00 | |
| 2026-03-05 | PEGA | PEGASYSTEMS INC | F — Tax withholding / forfeiture | 1.6K | $45.01 | $71K |
| 2026-03-05 | PEGA | PEGASYSTEMS INC | M — Option exercise | 6.5K | $0.00 | |
| 2026-03-03 | PEGA | PEGASYSTEMS INC | F — Tax withholding / forfeiture | 94 | $43.73 | $4K |
| 2026-03-03 | PEGA | PEGASYSTEMS INC | M — Option exercise | 384 | $0.00 | |
| 2026-03-03 | PEGA | PEGASYSTEMS INC | F — Tax withholding / forfeiture | 286 | $43.73 | $13K |
| 2026-03-03 | PEGA | PEGASYSTEMS INC | M — Option exercise | 1.2K | $0.00 | |
| 2025-09-05 | PEGA | PEGASYSTEMS INC | F — Tax withholding / forfeiture | 1.0K | $55.51 | $58K |
Leon Trefler serves as the Chief of Clients and Markets at Pegasystems Inc., a company specializing in customer engagement and business process management solutions. He has been involved in various roles within the company, contributing to its focus on enterprise clients in sectors such as finance and healthcare.…
3 primary Form 4 filings in the last 90 days, covering 1 company.
Recorded transactions: 0 open-market purchases () and 5 open-market sales ($1.16M) across all tracked filings.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Open the live Trefler Leon profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.