Mustang Bio, Inc.

MBIO·NASDAQ·$0.76Share Price as of 11/2·$6MMarket Cap as of 11/2

Financials

10-QQ2 ended 06/30/2608/05/26 10-QQ1 ended 03/31/2605/05/26 10-KFY 202503/19/26 10-QQ3 ended 09/30/2511/07/25 10-QQ2 ended 06/30/2508/08/25

Disclosures

8-KCurrent report10/15/26 8-KCurrent report04/17/26 8-KCurrent report12/23/25 8-KCurrent report07/09/25 8-KCurrent report03/05/25

Prospectuses and Registrations

424B5Prospectus supplement09/05/25 POS AMPost-effective amendment04/04/25 424B3Prospectus04/01/25 POS EXPost-effective amendment (exhibits)04/01/25 424B3Prospectus02/27/25

Proxies

DEF 14ADefinitive proxy12/03/25 DEF 14ADefinitive proxy12/06/24 DEF 14ADefinitive proxy04/28/23 DEFA14AAdditional proxy materials04/28/23 DEF 14ADefinitive proxy04/29/22

Ownership

Form 4Insider transaction04/27/26 Form 4Insider transaction12/30/25 Form 4Insider transaction12/30/25 Form 4Insider transaction12/30/25 SC 13G/ABeneficial ownership (amended)08/12/25

Other

EFFECTRequest for effectiveness04/11/25 DEF 14CDefinitive information statement03/03/25 PRE 14CPRE 14C02/21/25 CORRESPCorrespondence with the SEC02/05/25 EFFECTRequest for effectiveness02/05/25