TScan Therapeutics, Inc. (TCRX)
Nasdaq: TCRX · Biological Products, (No Diagnostic Substances) · Waltham, MA · filing with the SEC since 2019
Who owns TScan Therapeutics, Inc.
As filed with the SECHolders of 5% or more
5
Lynx1 Capital Management LP holds 13.1% of Voting Common Stock, par value $0.0001 per share, as its SCHEDULE 13G/A filed Aug 14, 2026 says.
Directors and officers
16
report now, of 24 people on the record since 2021. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 5 named at left.
Holders of 5% or moreshare of the class, as filed
Lynx1 Capital Management LP
SCHEDULE 13G/A · filed Aug 14, 2026 · Voting Common Stock, par value $0.0001 per share · 15% in Aug 14, 2025
Bvf Partners L P/il
SCHEDULE 13G/A · filed Aug 14, 2026 · Voting Common Stock, $0.0001 par value per share · 9.99% in May 15, 2026
Adage Capital Management, L.P.
SCHEDULE 13G/A · filed Feb 12, 2025 · Voting Common Stock, par value $0.0001 per share
K2 HealthVentures Equity Trust LLC
SCHEDULE 13G/A · filed Feb 14, 2025 · Voting Common Stock, $0.0001 par value per share
Readout Capital, LP
SCHEDULE 13G · filed Sep 25, 2026 · Voting Common Stock, $0.0001 par value per share
Adage Capital Management, L.P.
SCHEDULE 13G/A · filed Aug 12, 2025 · Voting Common Stock, par value $0.0001 per share · reported falling below 5%
Blackrock, Inc.
SCHEDULE 13G/A · filed Jul 16, 2025 · Common Stock · reported falling below 5%, from 5.4% in Apr 24, 2025
EcoR1 Capital, LLC
SCHEDULE 13G/A · filed May 15, 2025 · Voting Common Stock · reported falling below 5%
What TCRX reports owning in othersstakes of 5% or more, and other ties
1 subsidiary in 1 country, from the list filed with the 10-K filed Mar 4, 2026.
Insider tradesForm 4
0sales
0purchases
0sales on a scheduled plan
0people selling
$0sold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Oct 2, 2025 to Oct 2, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2024 runs to Oct 2, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window1 of 27 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Lynx1 Capital Management LP | 10% owner | 0 | $0 | 0 | 3 | $100,000 |