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GREAT SOUTHERN BANCORP, INC. — DEFA14A Filings

11 DEFA14A filings on record

This page lists all DEFA14A filings submitted to the SEC by GREAT SOUTHERN BANCORP, INC. (GSBC), sorted by most recent first. Each row links to the full filing on EdgarLookup. GREAT SOUTHERN BANCORP, INC. has filed 11 DEFA14A documents with the SEC since 2011. To view all SEC filings by GREAT SOUTHERN BANCORP, INC., see the full filings list.

Overview All Filings Financials Insiders
All 10-K 10-K/A 10-Q 144 25-NSE 3 3/A 305B2 4 4/A 424B1 424B5 5 5/A 8-A12G 8-K 8-K/A ARS CORRESP DEF 14A DEFA14A EFFECT FWP NT 10-K NT 10-Q POS AM PRE 14A RW S-3 S-3/A S-8 S-8 POS SC 13D SC 13D/A SC 13G SC 13G/A UPLOAD
Form Description Accession Number Filed Period
DEFA14A DEFINITIVE ADDITIONAL MATERIALS 0001174947-25-000405 Mar 27, 2025
DEFA14A DEFINITIVE ADDITIONAL MATERIALS 0001174947-24-000449 Mar 28, 2024
DEFA14A DEFINITIVE ADDITIONAL MATERIALS 0001174947-23-000456 Mar 31, 2023
DEFA14A DEFA14A 0001104659-22-040797 Mar 31, 2022
DEFA14A DEFA14A 0001104659-21-045133 Apr 1, 2021
DEFA14A ADDITIONAL PROXY SOLICITATION MATERIAL 0000927089-20-000204 Mar 27, 2020
DEFA14A ADDITIONAL PROXY SOLICITATION MATERIAL 0000927089-20-000202 Mar 27, 2020
DEFA14A ADDITIONAL PROXY STATEMENT SOLICITATION MATERIALS 0000927089-19-000154 Mar 29, 2019
DEFA14A ADDITIONAL PROXY STATEMENT SOLICITATION MATERIALS 0000927089-18-000144 Mar 27, 2018
DEFA14A 0000927089-17-000134 Mar 27, 2017
DEFA14A 0000927089-16-000774 Mar 22, 2016