Mercer Bancorp, Inc.

MSBB

Financials

10-QQ2 ended 03/31/2605/12/26 10-QQ1 ended 12/31/2502/13/26 10-KFY 202512/19/25 10-QQ3 ended 06/30/2508/14/25 10-QQ2 ended 03/31/2505/15/25

Disclosures

8-KCurrent report08/03/26 8-KCurrent report02/20/26 8-KCurrent report06/20/25 8-KCurrent report02/26/25 8-KCurrent report12/18/24

Prospectuses and Registrations

S-8 POSPost-effective amendment (S-8)08/10/26 S-8Registration of securities for employees02/26/25 POS AMPost-effective amendment09/19/23 424B3Prospectus06/20/23 424B3Prospectus05/22/23

Proxies

DEF 14ADefinitive proxy01/13/26 DEF 14ADefinitive proxy01/22/25 DEF 14ADefinitive proxy01/17/24

Ownership

SC 13G/ABeneficial ownership (amended)02/06/26 Form 4Insider transaction04/03/25 Form 4Insider transaction04/03/25 Form 4Insider transaction04/03/25 Form 4Insider transaction04/03/25

Other

15-12GCertification of termination of registration08/10/26 ARSAnnual report to shareholders01/13/26 ARSAnnual report to shareholders01/22/25 NT 10-KLate filing notification (10-K)12/30/24 NT 10-QLate filing notification (10-Q)05/15/24