Quantum-Si Inc.

QSI

Financials

10-QQ2 ended 06/30/2608/13/26 10-QQ1 ended 03/31/2605/07/26 10-KFY 202503/03/26 10-QQ3 ended 09/30/2511/05/25 10-QQ2 ended 06/30/2508/05/25

Disclosures

8-KCurrent report10/15/26 8-KCurrent report10/08/26 8-KCurrent report09/29/26 8-KCurrent report08/13/26 8-KCurrent report07/24/26

Prospectuses and Registrations

S-8Registration of securities for employees03/03/26 424B3Prospectus10/29/25 S-3/AShelf registration (amended)10/09/25 S-3Shelf registration09/26/25 424B5Prospectus supplement07/07/25

Proxies

DEF 14ADefinitive proxy04/01/26 DEFA14AAdditional proxy materials04/01/26 DEF 14ADefinitive proxy03/20/25 DEFA14AAdditional proxy materials03/20/25 DEFR14ADefinitive proxy (revised)04/30/24

Ownership

144Proposed sale of securities09/23/26 144Proposed sale of securities09/23/26 144Proposed sale of securities09/23/26 Form 4Insider transaction09/23/26 Form 4Insider transaction09/23/26

Other

25-NSERemoval from listing06/10/26 SDConflict Minerals disclosure05/22/26 ARSAnnual report to shareholders04/01/26 SDConflict Minerals disclosure05/22/25 ARSAnnual report to shareholders03/20/25