David M. Knott Jr’s Mersana Therapeutics MRSN Stock Holding History

David M. Knott Jr’s Portfolio MRSN Stock Details MRSN Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	–	Sell	-111,686	Closed	-$438K	–	90
2025 Q4	$438K	Buy	+111,686	New	+$2.12M	0.2%	52

Other funds holding MRSN

IFP Advisors Tampa, Florida $5.54B AUM 27.43% 1-Year Est. Return

David M. Knott Jr's MRSN Position: Q1 2026 in Review

David M. Knott Jr sold out of Mersana Therapeutics (MRSN) in Q1 2026, closing a stake of 111,686 shares — an estimated $438K sold.

David M. Knott Jr first reported a position in MRSN in Q4 2025 and held it in 1 quarter. The position peaked at $438K in Q4 2025. 1 fund tracked by Wall St. Rank holds MRSN as of Q1 2026.

David M. Knott Jr reported no remaining Mersana Therapeutics position as of Q1 2026 after selling out during the quarter.
David M. Knott Jr sold 111,686 Mersana Therapeutics shares in Q1 2026, an estimated $438K.
David M. Knott Jr first reported a position in Mersana Therapeutics in Q4 2025 and held it in 1 quarter.
David M. Knott Jr's Mersana Therapeutics position peaked at $438K in Q4 2025.
1 fund tracked by Wall St. Rank held Mersana Therapeutics as of Q1 2026.

Based on David M. Knott Jr's 13F filing for Q1 2026, filed 14 May 2026.