# EDGAR Filing Document

**Accession Number:** 0000099614
**File Stem:** 0001193125-25-198336
**Filing Date:** 2025-9
**Character Count:** 2852
**Document Hash:** 36879cc914eb4769e3303587be1e0e9f
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-198336.hdr.sgml**: 20250908

**ACCESSION NUMBER**: 0001193125-25-198336

**CONFORMED SUBMISSION TYPE**: 424B3

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20250908

**DATE AS OF CHANGE**: 20250908

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** TRI-CONTINENTAL Corp
- **CENTRAL INDEX KEY:** 0000099614

**ORGANIZATION NAME:**
- **EIN:** 135441850
- **STATE OF INCORPORATION:** MD
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 424B3
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-278928
- **FILM NUMBER:** 251300115

**BUSINESS ADDRESS:**
- **STREET 1:** 290 CONGRESS STREET
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02210
- **BUSINESS PHONE:** 612-671-4321

**MAIL ADDRESS:**
- **STREET 1:** 290 CONGRESS STREET
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02210

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** TRI-CONTINENTAL CORP
- **DATE OF NAME CHANGE:** 20030624

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** TRI CONTINENTAL CORP
- **DATE OF NAME CHANGE:** 19920703

**Supplement dated September 8, 2025**

to the Prospectus dated May 1, 2024, as supplemented

for Tri-Continental Corporation (the Fund)

The Fund's Board of Directors has approved a modification to the Fund's stock repurchase program. Accordingly, effectively immediately, the ninth paragraph under the heading *Summary of the Fund – Prospectus Summary* is hereby superseded and replaced with the following: <br> In September 2025, the Fund's Board of Directors (the Board) approved a stock repurchase program under which the Fund repurchases up to 5% of the Fund's outstanding Common Stock during the year directly from stockholders and in the open market, provided that, with respect to shares purchased in the open market, the excess of the net asset value of a share of Common Stock over its market price (the discount) is greater than 10%; however, in order to facilitate the required distributions, no repurchases will be made during the period between the declaration date and the ex-dividend date for Fund distributions. During 2024, under a slightly different program that did not suspend Fund repurchases between declaration date and ex-dividend date of a Fund distribution, the Fund purchased 1,986,238 shares of Common Stock in the open market. The intent of the stock repurchase program is, among other things, to moderate the growth in the number of shares of Common Stock outstanding, increase the net asset value of the Fund's outstanding shares, reduce the dilutive impact on stockholders who do not take capital gains distributions in additional shares and increase the liquidity of the Fund's Common Stock in the marketplace.

*The rest of the section remains the same.*

*Shareholders should retain this Supplement for future reference.*

SUP240_12_013_(09/25)

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