GI
TRML

GAMCO Investors’s Tourmaline Bio TRML Stock Holding History

GAMCO Investors’s Portfolio TRML Stock Details TRML Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-10,000
Closed -$478K – 1069
2025
Q3 		$478K Buy
+10,000
New +$277K ﹤0.01% 810

GAMCO Investors's TRML Position: Q4 2025 in Review

GAMCO Investors sold out of Tourmaline Bio (TRML) in Q4 2025, closing a stake of 10,000 shares — an estimated $478K sold.

GAMCO Investors first reported a position in TRML in Q3 2025 and held it in 1 quarter. The position peaked at $478K in Q3 2025. 0 funds tracked by Wall St. Rank hold TRML as of Q4 2025.

  • GAMCO Investors reported no remaining Tourmaline Bio position as of Q4 2025 after selling out during the quarter.
  • GAMCO Investors sold 10,000 Tourmaline Bio shares in Q4 2025, an estimated $478K.
  • GAMCO Investors first reported a position in Tourmaline Bio in Q3 2025 and held it in 1 quarter.
  • GAMCO Investors's Tourmaline Bio position peaked at $478K in Q3 2025.
  • 0 funds tracked by Wall St. Rank held Tourmaline Bio as of Q4 2025.

Based on GAMCO Investors's 13F filing for Q4 2025, filed 5 Feb 2026.