Mersana Therapeutics, Inc. 4 SEC Filings

Filed On	Filing
06 Jan 2026	Form 4: Hack Andrew A. F., Director Disposed of 347,123 shares (Tender Offer) · Disposed of 12,609 Stock Option (right to buy) (Disposition to Issuer)
06 Jan 2026	Form 4: Hege Kristen, Director Disposed of 578 shares (Tender Offer) · Disposed of 14,082 Stock Option (right to buy) (Disposition to Issuer)
06 Jan 2026	Form 4: Diaz Allene M., Director Disposed of 578 shares (Tender Offer) · Disposed of 9,181 Stock Option (right to buy) (Disposition to Issuer)
06 Jan 2026	Form 4: Dere Willard H, Director Disposed of 1,567 shares (Tender Offer) · Disposed of 11,996 Stock Option (right to buy) (Disposition to Issuer)
06 Jan 2026	Form 4: Carvajal Alejandra, SVP, Chief Legal Officer Disposed of 3,131 shares (Tender Offer) · Disposed of 31,497 Stock Option (right to buy) (Disposition to Issuer) · Disposed of 4,483 Restricted Stock Units (Disposition to Issuer)
06 Jan 2026	Form 4: Bala Mohan, SVP, Chief Development Disposed of 2,927 shares (Tender Offer) · Disposed of 32,546 Stock Option (right to buy) (Disposition to Issuer) · Disposed of 4,950 Restricted Stock Units (Disposition to Issuer)
06 Jan 2026	Form 4: Alleva Lawrence M, Director Disposed of 662 shares (Tender Offer) · Disposed of 15,247 Stock Option (right to buy) (Disposition to Issuer)
06 Jan 2026	Form 4: Huber Martin H. Jr., Director Disposed of 9,573 shares (Tender Offer) · Disposed of 87,257 Stock Option (right to buy) (Disposition to Issuer) · Disposed of 21,924 Restricted Stock Units (Disposition to Issuer)
06 Jan 2026	Form 4: Mandelia Ashish, VP, Chief Accounting Officer Disposed of 2,300 shares (Tender Offer) · Disposed of 13,602 Stock Option (right to buy) (Disposition to Issuer) · Disposed of 1,570 Restricted Stock Units (Disposition to Issuer)
06 Jan 2026	Form 4: Protopapas Anna, Director Disposed of 19,220 shares (Tender Offer) · Disposed of 64,088 Stock Option (right to buy) (Disposition to Issuer)
06 Jan 2026	Form 4: Lowinger Timothy B, SVP, Chief Sci.&Tech. Officer Disposed of 10,466 shares (Tender Offer) · Disposed of 43,445 Stock Option (right to buy) (Disposition to Issuer) · Disposed of 4,608 Restricted Stock Units (Disposition to Issuer)
06 Jan 2026	Form 4: Mott David M, Director Disposed of 23,929 shares (Tender Offer) · Disposed of 12,948 Stock Option (right to buy) (Disposition to Issuer)
06 Jan 2026	Form 4: DeSchuytner Brian, SVP, COO & CFO Disposed of 5,015 shares (Tender Offer) · Disposed of 50,393 Stock Option (right to buy) (Disposition to Issuer) · Disposed of 5,300 Restricted Stock Units (Disposition to Issuer)
28 Oct 2025	Form 4: Bala Mohan, SVP, Chief Development Officer Received 250 shares by exercise or conversion · Sold 77 shares ($762)
15 Sep 2025	Form 4: Huber Martin H. Jr., Director Received 6,670 shares by exercise or conversion · Sold 2,012 shares ($14.7K)
13 Jun 2025	Form 4: Alleva Lawrence M, Director Granted 61,500 Stock Option (right to buy)
13 Jun 2025	Form 4: Hack Andrew A. F., Director Granted 61,500 Stock Option (right to buy)
13 Jun 2025	Form 4: Dere Willard H, Director Granted 61,500 Stock Option (right to buy)
13 Jun 2025	Form 4: Diaz Allene M., Director Granted 61,500 Stock Option (right to buy)
13 Jun 2025	Form 4: Protopapas Anna, Director Granted 61,500 Stock Option (right to buy)

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