Lynx1 Capital Management LP - 19 Dec 2025 Form 4 Insider Report for TScan Therapeutics, Inc. (TCRX)

Reporting relationship: 10%+ Owner
Issuer ticker: TCRX
Reported as of: 19 Dec 2025
Net transaction value: +$145,526
SEC form: 4
Accepted by SEC: 23 Dec 2025, 18:17:28 UTC
Prior SEC filing: 30 Oct 2025
Next SEC filing: 02 Apr 2026
Source filing: View source filing
Reporting owner signature: Lynx1 Capital Management LP, By: Lynx1 Capital Management GP LLC, its general partner, By: /s/ Weston Nichols, Sole Member

Key filing fact

Lynx1 Capital Management LP filed Form 4 for TScan Therapeutics, Inc. (TCRX) on 23 Dec 2025.

Key facts

This page summarizes Lynx1 Capital Management LP's Form 4 filing for TScan Therapeutics, Inc. (TCRX).
3 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 23 Dec 2025, 18:17.

Change

Previous filing in this sequence was filed on 30 Oct 2025.
Current net transaction value: +$145,526.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (2)

CIK 0001910456 Primary reporting owner

Lynx1 Capital Management LP

Relationship: 10%+ Owner
Address: D81 CALLE C, STE 301, PMB 1202, DORADO, PUERTO RICO
Signature: Lynx1 Capital Management LP, By: Lynx1 Capital Management GP LLC, its general partner, By: /s/ Weston Nichols, Sole Member
Signature date: 23 Dec 2025

CIK 0001746376

Nichols Weston

Relationship: 10%+ Owner
Address: 151 CALLE DE SAN FRANCISCO, SUITE 200, PMB 1237, SAN JUAN, PUERTO RICO
Signature: /s/ Weston Nichols
Signature date: 23 Dec 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

TCRX transaction

Common stock, $0.0001 par value per share ("Common Stock")

Purchase

Transaction value: $71,974
Shares: +80,069
Change %: +1%
Price: $0.8989
Shares after: 7,937,416
Date: 19 Dec 2025
Ownership: See footnote
Footnotes: F1, F2

TCRX transaction

Common Stock

Purchase

Transaction value: $67,950
Shares: +75,500
Change %: +0.95%
Price: $0.9000
Shares after: 8,012,916
Date: 22 Dec 2025
Ownership: See footnote
Footnotes: F2

TCRX transaction

Common Stock

Purchase

Transaction value: $5,602
Shares: +6,232
Change %: +0.08%
Price: $0.8989
Shares after: 8,019,148
Date: 23 Dec 2025
Ownership: See footnote
Footnotes: F2, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $0.8862 to $0.90, inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth herein.

Footnote F2

The securities to which this filing relates are held directly by Lynx1 Master Fund LP and a managed account to which Lynx1 Capital Management LP (the "Investment Manager") serves as investment manager. Weston Nichols ("Mr. Nichols") is the sole member of Lynx1 Capital Management GP LLC, the general partner of the Investment Manager. Each of the Investment Manager and Mr. Nichols disclaims beneficial ownership of the securities to which this filing relates for purposes of Section 16 of the Securities and Exchange Act of 1934, as amended, except to the extent of his or its pecuniary interest therein, if any.

Footnote F3

The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $0.8958 to $0.90, inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth herein.