Caribou Biosciences, Inc.

CRBU·NASDAQ·$2.16Share Price as of 11/2·$214MMarket Cap as of 11/2

Financials

10-QQ2 ended 06/30/2608/13/26 10-QQ1 ended 03/31/2605/07/26 10-KFY 202503/05/26 10-QQ3 ended 09/30/2511/12/25 10-QQ2 ended 06/30/2508/12/25

Disclosures

8-KCurrent report10/06/26 8-KCurrent report08/13/26 8-KCurrent report06/18/26 8-KCurrent report06/11/26 8-KCurrent report05/07/26

Prospectuses and Registrations

S-8Registration of securities for employees03/05/26 S-3Shelf registration05/08/25 S-8Registration of securities for employees03/10/25 S-8Registration of securities for employees03/11/24 424B5Prospectus supplement07/14/23

Proxies

DEFA14AAdditional proxy materials06/05/26 DEFR14ADefinitive proxy (revised)05/01/26 DEF 14ADefinitive proxy04/24/26 DEFA14AAdditional proxy materials04/24/26 PRE 14APreliminary proxy04/10/26

Ownership

Form 4Insider transaction02/27/26 144Proposed sale of securities02/25/26 144Proposed sale of securities02/25/26 144Proposed sale of securities02/25/26 Form 4Insider transaction02/24/26

Other

ARSAnnual report to shareholders04/24/26 EFFECTRequest for effectiveness05/14/25 CORRESPCorrespondence with the SEC05/13/25 UPLOADLetter from the SEC05/12/25 ARSAnnual report to shareholders04/25/25