X0606 TA-2 2025-12-31 084-00458 0000795389 XXXXXXXX LIVE true false TRI-CONTINENTAL CORP /TA All Columbia Management Investment Services Corp 084-05685 N Securities and Exchange Commission No, failed to file amendment(s) Tri-Continental Corporation did not file a TA-1/A within 60 days of a mailing address update. The TA-1/A should have been filed on 8/5/24 but was filed on 9/5/25. /s/Joseph D'Alessandro 212-850-1703 Assistant Secretary 03/27/2026