TScan Therapeutics, Inc. - Voting Common Stock, $0.0001 par value per share (TCRX)

Q: What does CUSIP 89854M101 represent in this 13F holders report?

CUSIP 89854M101 is the security identifier for TCRX - TScan Therapeutics, Inc. - Voting Common Stock, $0.0001 par value per share used to aggregate holder disclosures.

Q: How many institutions held TCRX - TScan Therapeutics, Inc. - Voting Common Stock, $0.0001 par value per share in Q3 2025?

72 institutional investors reported TCRX - TScan Therapeutics, Inc. - Voting Common Stock, $0.0001 par value per share for Q3 2025. Use the holders table for investor-level position and value details.

CUSIP: 89854M101

Q3 2025 13F Holders as of 30 Sep 2025

Security type / class: Equity / Voting Common Stock, $0.0001 par value per share
Total 13F shares: 34,601,160
Total 13F value: $62,910,264
Share change: -1,129,874
SEC-reported price per share: $1.82
Number of holders: 72
Value change: -$1,894,623
Number of buys: 22
Number of sells: 42
Shares outstanding: 64,242,553

Security key

89854M101

Report period

Q3 2025

Institutions

Top holders

TCRX full security history Ownership snapshot Full 13F holder table Newer quarter: Q4 2025 TScan Therapeutics, Inc. SEC filings TScan Therapeutics, Inc. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 89854M101

Newer quarter: Q4 2025

Recent filing periods:

Q2 2026 Q1 2026 Q4 2025 Q3 2025

Ownership snapshot

Top reported holders of TCRX - TScan Therapeutics, Inc. - Voting Common Stock, $0.0001 par value per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

ADAGE CAPITAL PARTNERS GP...

Disclosed value leader

EcoR1 Capital, LLC

Comparable rows

15/15

Latest evidence

30 Jun 2025

13D/G 13F 3/4/5 Lead comparable stake: 7.1% 13D/G row: ADAGE CAPITAL PARTNERS GP, L.L.C. Showing 1-6 of 15 holder rows.

Quick read

ADAGE CAPITAL PARTNERS GP, L.L.C. leads the comparable SEC ownership view at 7.1%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens ADAGE CAPITAL PARTNERS GP, L.L.C.'s linked filing trail.

Comparable ownership Top 5

ADAGE CAPITAL PARTNERS GP, L.L.C. 7.1%

K2 HealthVentures Equity Trust LLC 6.9%

Adage Capital Management, L.P. 2.5%

BlackRock, Inc. 1.8%

EcoR1 Capital, LLC 1.3%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
ADAGE CAPITAL PARTNERS GP, L.L.C.	13D/G Adage Capital Management, L.P. 13D/G	7.1%	$5,600,000 3,500,000 shares	$0	31 Dec 2024
K2 HealthVentures Equity Trust LLC	13D/G 13D/G	6.9%	$5,764,320 3,602,700 shares	$0	31 Dec 2024
Adage Capital Management, L.P.	13D/G 13D/G	2.5%	$1,957,500 1,350,000 shares	$0	30 Jun 2025
BlackRock, Inc.	13F 13D/G Company 13F 13D/G	1.8% from 13D/G	$3,721,460 2,566,524 shares	—	30 Jun 2025
EcoR1 Capital, LLC	3/4/5 13D/G 10%+ Owner 3/4/5 13D/G	1.3% from 13D/G	$24,842,500 5,000,000 shares	—	26 May 2023
Lynx1 Capital Management LP	13F Company 13F	12%	$11,393,153 7,857,347 shares	—	30 Jun 2025

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q3 2025

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

34,601,160

Rows available

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q3 2025 vs Q1 2026 Across Filers

Q1 2026 holders

Q3 2025 holders

Holder diff

Investor	Q1 2026 Shares	Q3 2025 Shares	Share Diff	Share Chg %	Q1 2026 value	Q3 2025 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend