RPTX · Insider Trading

Repare Therapeutics Inc. Common Shares

Every open-market purchase and sale reported by RPTX officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.

Form 4 Filings
50
most recent
Open-Market Buys
2
code P
Sales
14
code S
Reporting Insiders
3
current holders
RPTX — Recent Form 4 Transactions (latest 2026-01-28)
FiledInsiderRole TypeSharesValue
2026-01-28 Carol Schafer Director D −8,000 —
2026-01-28 Ann D Rhoads Director D −4,000 —
2026-01-28 Thomas Civik Director D −7,500 —
2026-01-28 Sandra Isabelle Barros Alves SVP, Finance and CAO D −31,622 —
2026-01-28 Steve Forte EVP, CHIEF FINANCIAL OFFICER D −56,786 —
2025-04-29 Sandra Isabelle Barros Alves SVP, Finance and CAO A +4,100 —
2025-04-04 Steve Forte EVP, CHIEF FINANCIAL OFFICER A +500,000 deriv. —
2025-03-14 Maria Koehler EVP, CHIEF MEDICAL OFFICER Sell −3,596 −$4.10K
2025-03-14 Lloyd Mitchell Segal PRESIDENT AND CEO Sell −21,179 −$24.14K
2025-03-14 Michael Zinda EVP, CHIEF SCIENTIFIC OFFICER Sell −5,611 −$6.40K
2025-03-14 Steve Forte EVP, CHIEF FINANCIAL OFFICER Sell −6,884 −$7.85K
2025-03-06 Steve Forte EVP, CHIEF FINANCIAL OFFICER A +14,000 —
2025-03-06 Michael Zinda EVP, CHIEF SCIENTIFIC OFFICER A +14,000 —
2025-03-06 Lloyd Mitchell Segal PRESIDENT AND CEO A +40,000 —
2024-06-20 Steven H Stein Director A +54,000 deriv. —
2024-06-20 Susan Molineaux Director A +27,200 deriv. —
2024-06-20 Ann D Rhoads Director A +27,200 deriv. —
2024-06-20 Carol Schafer Director A +27,200 deriv. —
2024-06-20 Briggs Morrison Director A +27,200 deriv. —
2024-06-20 Samarth Kulkarni Director A +27,200 deriv. —
2024-06-20 David P Bonita Director A +27,200 deriv. —
2024-06-20 Thomas Civik Director A +27,200 deriv. —
2024-04-01 Steve Forte EVP, CHIEF FINANCIAL OFFICER Sell −1,614 −$7.45K
2024-04-01 Lloyd Mitchell Segal PRESIDENT AND CEO Sell −5,141 −$23.78K
2024-04-01 Maria Koehler EVP, CHIEF MEDICAL OFFICER Sell −800 −$3.72K
2024-04-01 Michael Zinda EVP, CHIEF SCIENTIFIC OFFICER Sell −860 −$4.00K
2024-03-27 Lloyd Mitchell Segal PRESIDENT AND CEO Sell −7,950 −$37.26K
2024-03-27 Michael Zinda EVP, CHIEF SCIENTIFIC OFFICER Sell −1,350 −$6.30K
2024-03-27 Maria Koehler EVP, CHIEF MEDICAL OFFICER Sell −1,500 −$7.00K
2024-03-27 Steve Forte EVP, CHIEF FINANCIAL OFFICER Sell −2,475 −$11.56K
2024-03-05 Steve Forte EVP, CHIEF FINANCIAL OFFICER A +14,000 —
2024-03-04 Michael Zinda EVP, CHIEF SCIENTIFIC OFFICER A +14,000 —
2024-03-04 Maria Koehler EVP, CHIEF MEDICAL OFFICER A +14,000 —
2024-03-04 Lloyd Mitchell Segal PRESIDENT AND CEO A +40,000 —
2023-12-12 Maria Koehler EVP, Chief Medical Officer M +43,746 +$98.76K
2023-11-17 BIOTECHNOLOGY VALUE FUND L P 10%+ Owner Buy +12,273,010 +$62.50M
2023-11-03 BIOTECHNOLOGY VALUE FUND II LP — Buy +7,837,090 +$28.21M
2023-06-12 Briggs Morrison Director A +27,200 deriv. —
2023-06-12 David P Bonita Director A +27,200 deriv. —
2023-06-12 Thomas Civik Director A +27,200 deriv. —
2023-06-12 Todd Foley Director A +27,200 deriv. —
2023-06-12 Susan Molineaux Director A +76,200 deriv. —
2023-06-12 Carol Schafer Director A +27,200 deriv. —
2023-06-12 Samarth Kulkarni Director A +27,200 deriv. —
2023-06-12 Ann D Rhoads Director A +27,200 deriv. —
2023-06-09 Michael Zinda EVP, Chief Scientific Officer Sell −3,535 −$42.55K
2023-06-07 Michael Zinda EVP, Chief Scientific Officer Sell −1,200 −$14.45K
2023-02-01 Lloyd Mitchell Segal President and CEO A +78,550 —
2023-02-01 Steve Forte EVP, Chief Financial Officer A +24,530 —
2023-02-01 Maria Koehler EVP, Chief Medical Officer A +26,450 —
RPTX — Current Insider Holders
InsiderRole Shares HeldValue
Lloyd Mitchell Segal PRESIDENT AND CEO 231,952 $614.67K
Maria Koehler EVP, CHIEF MEDICAL OFFICER 227,813 $603.70K
Michael Zinda EVP, CHIEF SCIENTIFIC OFFICER 80,297 $212.79K
RPTX Insider Trading FAQ
Who are the insiders at RPTX?
3 officers, directors and 10%+ beneficial owners currently report holdings in RPTX via SEC Form 4.
Are RPTX insiders buying or selling?
Across the 50 most recent Form 4 filings for RPTX, 2 were open-market purchases (code P) and 14 were sales (code S). Sales frequently reflect scheduled 10b5-1 plans or tax withholding rather than a view on the stock.
How current is RPTX insider data?
Form 4 must be filed within two business days of the transaction, so this is close to real time. The most recent RPTX filing is dated 2026-01-28.
How to read Form 4 activity

Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.

Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.

Full filing history and per-insider positions are on the RPTX quote page; the site-wide leaderboard is on the insider transactions hub.

Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.