MRSN insider transaction filings
Mersana Therapeutics, Inc. — 22 most recent Form 4 filings from SEC EDGAR, normalized by FilingPulse. Latest filing: 2026-01-06. Screen MRSN transaction legs live →
| Filed | Form | Insider | Reported transactions | Source |
|---|---|---|---|---|
| 2026-01-06 | 4 | Hack Andrew A. F. — Director | Code (U): 578 · Code (U): 346,545 · Disposition to issuer (D): 2,460 (derivative) · Disposition to issuer (D): 2,088 (derivative) · Disposition to issuer (D): 400 (derivative) · Disposition to issuer (D): 1,000 (derivative) · +7 more | EDGAR |
| 2026-01-06 | 4 | Diaz Allene M. — Director | Code (U): 578 · Disposition to issuer (D): 2,460 (derivative) · Disposition to issuer (D): 1,571 (derivative) · Disposition to issuer (D): 416 (derivative) · Disposition to issuer (D): 1,800 (derivative) · Disposition to issuer (D): 734 (derivative) · +1 more | EDGAR |
| 2026-01-06 | 4 | Carvajal Alejandra — SVP, Chief Legal Officer | Code (U): 3,131 · Disposition to issuer (D): 3,047 (derivative) · Disposition to issuer (D): 6,702 (derivative) · Disposition to issuer (D): 4,500 (derivative) · Disposition to issuer (D): 1,800 (derivative) · Disposition to issuer (D): 1,527 (derivative) · +7 more | EDGAR |
| 2026-01-06 | 4 | Bala Mohan — SVP, Chief Development | Code (U): 2,927 · Disposition to issuer (D): 3,515 (derivative) · Disposition to issuer (D): 7,734 (derivative) · Disposition to issuer (D): 1,853 (derivative) · Disposition to issuer (D): 2,646 (derivative) · Disposition to issuer (D): 1,053 (derivative) · +6 more | EDGAR |
| 2026-01-06 | 4 | Alleva Lawrence M — Director | Code (U): 578 · Code (U): 84 · Disposition to issuer (D): 2,460 (derivative) · Disposition to issuer (D): 800 (derivative) · Disposition to issuer (D): 142 (derivative) · Disposition to issuer (D): 400 (derivative) · +18 more | EDGAR |
| 2026-01-06 | 4 | Huber Martin H. Jr. — President, CEO, Director | Code (U): 9,573 · Disposition to issuer (D): 5,938 (derivative) · Disposition to issuer (D): 26,713 (derivative) · Disposition to issuer (D): 1,923 (derivative) · Disposition to issuer (D): 99 (derivative) · Disposition to issuer (D): 1,002 (derivative) · +13 more | EDGAR |
| 2026-01-06 | 4 | Mandelia Ashish — VP, Chief Accounting Officer | Code (U): 2,300 · Disposition to issuer (D): 1,687 (derivative) · Disposition to issuer (D): 1,312 (derivative) · Disposition to issuer (D): 2,870 (derivative) · Disposition to issuer (D): 555 (derivative) · Disposition to issuer (D): 44 (derivative) · +12 more | EDGAR |
| 2026-01-06 | 4 | Lowinger Timothy B — SVP, Chief Sci.&Tech. Officer | Code (U): 10,466 · Disposition to issuer (D): 3,047 (derivative) · Disposition to issuer (D): 6,702 (derivative) · Disposition to issuer (D): 696 (derivative) · Disposition to issuer (D): 1,578 (derivative) · Disposition to issuer (D): 713 (derivative) · +16 more | EDGAR |
| 2026-01-06 | 4 | DeSchuytner Brian — SVP, COO & CFO | Code (U): 5,015 · Disposition to issuer (D): 3,515 (derivative) · Disposition to issuer (D): 7,734 (derivative) · Disposition to issuer (D): 4,009 (derivative) · Disposition to issuer (D): 5,590 (derivative) · Disposition to issuer (D): 178 (derivative) · +13 more | EDGAR |
| 2026-01-06 | 4 | Protopapas Anna — Director | Code (U): 6,721 · Code (U): 2,890 · Code (U): 9,609 · Disposition to issuer (D): 2,460 (derivative) · Disposition to issuer (D): 2,500 (derivative) · Disposition to issuer (D): 480 (derivative) · +14 more | EDGAR |
| 2026-01-06 | 4 | Dere Willard H — Director | Code (U): 1,567 · Disposition to issuer (D): 2,460 (derivative) · Disposition to issuer (D): 800 (derivative) · Disposition to issuer (D): 544 (derivative) · Disposition to issuer (D): 1,000 (derivative) · Disposition to issuer (D): 450 (derivative) · +7 more | EDGAR |
| 2026-01-06 | 4 | Hege Kristen — Director | Code (U): 578 · Disposition to issuer (D): 2,460 (derivative) · Disposition to issuer (D): 142 (derivative) · Disposition to issuer (D): 400 (derivative) · Disposition to issuer (D): 1,000 (derivative) · Disposition to issuer (D): 450 (derivative) · +12 more | EDGAR |
| 2026-01-06 | 4 | MOTT DAVID M — Director | Code (U): 23,546 · Code (U): 383 · Disposition to issuer (D): 2,460 (derivative) · Disposition to issuer (D): 264 (derivative) · Disposition to issuer (D): 400 (derivative) · Disposition to issuer (D): 1,011 (derivative) · +9 more | EDGAR |
| 2025-10-28 | 4 | Bala Mohan — SVP, Chief Development Officer | Option exercise (M): 250 @ $0 · Sale (S): 77 @ $9.90 · Option exercise (M): 250 (derivative) @ $0 | EDGAR |
| 2025-09-15 | 4 | Huber Martin H. Jr. — President, CEO, Director | Option exercise (M): 6,670 @ $0 · Sale (S): 2,012 @ $7.31 · Option exercise (M): 6,670 (derivative) @ $0 | EDGAR |
| 2025-06-13 | 4 | Alleva Lawrence M — Director | Grant/award (A): 61,500 (derivative) @ $0 | EDGAR |
| 2025-06-13 | 4 | Diaz Allene M. — Director | Grant/award (A): 61,500 (derivative) @ $0 | EDGAR |
| 2025-06-13 | 4 | Hack Andrew A. F. — Director | Grant/award (A): 61,500 (derivative) @ $0 | EDGAR |
| 2025-06-13 | 4 | Protopapas Anna — Director | Grant/award (A): 61,500 (derivative) @ $0 | EDGAR |
| 2025-06-13 | 4 | Dere Willard H — Director | Grant/award (A): 61,500 (derivative) @ $0 | EDGAR |
| 2025-06-13 | 4 | Hege Kristen — Director | Grant/award (A): 61,500 (derivative) @ $0 | EDGAR |
| 2025-06-13 | 4 | MOTT DAVID M — Director | Grant/award (A): 61,500 (derivative) @ $0 | EDGAR |
Recent 8-K events — Mersana Therapeutics, Inc.
| Filed | Form | Items reported | Source |
|---|---|---|---|
| 2026-01-06 | 8-K | 1.02 — Termination of a Material Definitive Agreement 2.01 — Completion of Acquisition or Disposition of Assets 3.01 — Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing 3.03 — Material Modification to Rights of Security Holders 5.01 — Changes in Control of Registrant 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers 5.03 — Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-11-14 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-11-13 | 8-K | 1.01 — Entry into a Material Definitive Agreement 8.01 — Other Events 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-09-05 | 8-K | 3.01 — Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing | EDGAR |
| 2025-08-13 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-07-24 | 8-K | 3.03 — Material Modification to Rights of Security Holders 5.03 — Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-07-03 | 8-K | 1.02 — Termination of a Material Definitive Agreement | EDGAR |
| 2025-06-13 | 8-K | 5.07 — Submission of Matters to a Vote of Security Holders | EDGAR |
| 2025-06-02 | 8-K | 7.01 — Regulation FD Disclosure 8.01 — Other Events 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-05-15 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
Need this as JSON?
GET https://api.filingpulse.io/v1/insider-trades?ticker=MRSN returns every filing on this page — normalized, with footnotes and derivative legs — and webhooks push new ones to you in seconds. API docs →