Gabelli Funds’s Mersana Therapeutics MRSN Stock Holding History

Gabelli Funds’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	-47,300	Closed	-$1.37M	–	1304
2025 Q4	$1.37M	Buy	+47,300	New	+$898K	0.01%	836

Other funds holding MRSN

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

Gabelli Funds's MRSN Position: Q1 2026 in Review

Gabelli Funds sold out of Mersana Therapeutics (MRSN) in Q1 2026, closing a stake of 47,300 shares — an estimated $1.37M sold.

Gabelli Funds first reported a position in MRSN in Q4 2025 and held it in 1 quarter. The position peaked at $1.37M in Q4 2025. 1 fund tracked by Wall St. Rank holds MRSN as of Q1 2026.

Gabelli Funds reported no remaining Mersana Therapeutics position as of Q1 2026 after selling out during the quarter.
Gabelli Funds sold 47,300 Mersana Therapeutics shares in Q1 2026, an estimated $1.37M.
Gabelli Funds first reported a position in Mersana Therapeutics in Q4 2025 and held it in 1 quarter.
Gabelli Funds's Mersana Therapeutics position peaked at $1.37M in Q4 2025.
1 fund tracked by Wall St. Rank held Mersana Therapeutics as of Q1 2026.

Based on Gabelli Funds's 13F filing for Q1 2026, filed 14 May 2026.