Tscan Therapeutics, Inc.

TCRX·NASDAQ·$1.07Share Price as of 11/2·$65MMarket Cap as of 11/2

Financials

10-QQ2 ended 06/30/2608/12/26 10-QQ1 ended 03/31/2605/06/26 10-KFY 202503/04/26 10-QQ3 ended 09/30/2511/12/25 10-QQ2 ended 06/30/2508/12/25

Disclosures

8-KCurrent report10/16/26 8-KCurrent report09/30/26 8-KCurrent report09/11/26 8-KCurrent report09/02/26 8-KCurrent report08/18/26

Prospectuses and Registrations

S-8Registration of securities for employees03/04/26 S-3Shelf registration03/05/25 S-8Registration of securities for employees03/05/25 424B5Prospectus supplement12/26/24 S-8Registration of securities for employees06/14/24

Proxies

DEF 14ADefinitive proxy10/26/26 PRE 14APreliminary proxy10/16/26 DEF 14ADefinitive proxy04/17/26 PRE 14APreliminary proxy04/07/26 DEF 14ADefinitive proxy05/14/25

Ownership

Form 4Insider transaction10/02/26 Form 4Insider transaction10/02/26 SC 13GBeneficial ownership09/25/26 SC 13G/ABeneficial ownership (amended)08/14/26 SC 13G/ABeneficial ownership (amended)08/14/26

Other

ARSAnnual report to shareholders04/17/26 ARSAnnual report to shareholders05/14/25 EFFECTRequest for effectiveness03/14/25 CORRESPCorrespondence with the SEC03/12/25 UPLOADLetter from the SEC03/11/25