Tri-Continental Corporation

Stockholder Services

     Tri-Continental provides a number of services to make maintaining an investment in its Common Stock more convenient.

Automatic Dividend Investment and Cash Purchase Plan. Stockholders may automatically purchase additional shares with dividends and capital gains. There is no charge for this service. Stockholders may also purchase additional shares directly from the Corporation. There is a service fee of a maximum of $2.00 for each cash purchase transaction. Automatic Cash Withdrawal Plan. Stockholders who hold common shares with a market value of $5,000 or more may elect to receive a fixed amount from their investment at regular intervals by selling their shares to the Corporation. Traditional Individual Retirement Account (IRA). Stockholders who have earned income and are under age 70 ¹ / ₂ may contribute up to $3,000 per year to a Traditional IRA for 2003. A working or non-working spouse may also contribute up to $3,000 to a separate Traditional IRA for 2003. Individuals who reach age 50 prior to the end of a taxable year may make additional “catch-up contributions” to a Traditional IRA of up to $500 (increasing to $1,000 for years beginning after 2005). Contributions to a Traditional IRA may be deductible or non-deductible. If you are single and not covered by an employer’s retirement plan, your contribution will always be deductible. For individuals who are covered by a plan, contributions will be deductible if your modified adjusted gross income (MAGI) in 2003 is less than $40,000. For spouses who are both covered by a plan, contributions will be fully deductible if your MAGI is less than $60,000. If one spouse does not work or is not covered by a retirement plan, that spouse’s contribution will be fully deductible provided your household MAGI does not exceed $150,000. If your contribution is not deductible, you may still take advantage of the tax-deferred accumulation of earnings in your Traditional IRA.

Rollover IRA. You may be eligible to roll over a distribution of assets received from another IRA, a qualified employee benefit plan, or tax-deferred annuity into a Rollover IRA with Tri-Continental. To avoid a tax penalty, the transfer to a Rollover IRA must occur within 60 days of receipt of the qualifying distribution. If you do not make a direct transfer of a distribution from a qualified employee benefit plan or a tax-deferred annuity to a Rollover IRA, the payor of the distribution must withhold 20% of the distribution.

Roth IRA. You (and a working or non-working spouse) may each make an after-tax contribution of up to $3,000 per year to a Roth IRA provided you have earned income and meet the eligibility requirements. Your MAGI must be less than $95,000 (individuals) or $150,000 (married couples) to be eligible to make a full contribution to a Roth IRA. You are eligible to make a partial Roth IRA contribution if your MAGI is below $110,000 (individuals) or $160,000 (married couples). Total combined contributions to a Roth IRA and a Traditional IRA cannot exceed $3,000 in any year. Individuals who reach age 50 prior to the end of a taxable year may make additional “catch-up contributions” to a Roth IRA of up to $500 (increasing to $1,000 for years beginning after 2005). Earnings grow tax-free and will be distributed to you tax-free and penalty-free provided that you hold your account for at least five years and you take the distribution either after age 59 ¹ / ₂ , for disability, upon death, or to make a first-time home purchase (up to $10,000). Unlike a Traditional IRA, you may contribute to a Roth IRA even if you are over age 70 ¹ / ₂ (if you have earned income), and you are not required to take minimum distributions at age 70 ¹ / ₂ . You may convert an existing Traditional IRA to a Roth IRA to take advantage of tax-free distributions. You must pay taxes on any earnings and deductible contributions in your Traditional IRA when converting it to a Roth IRA. Talk to your financial advisor for more details on converting your Traditional IRA.

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Tri-Continental Corporation

Stockholder Services (continued)

Retirement Planning — Qualified Plans. Unincorporated businesses and the self-employed may take advantage of the same benefits in their retirement plans that are available to corporations. Contribution levels can go as high as 100% of earned income (reduced by plan contributions), to a maximum of $40,000 per participant. For retirement plan purposes, no more than $205,000 may be taken into account as earned income under the plan in 2003 and future years (subject to adjustments to reflect cost of living increases). Social Security integration and employee vesting schedules are also available as options in the Tri-Continental prototype retirement plans. Although you already may be participating in an employer’s retirement plan, you may be eligible to establish another plan based upon income from other sources, such as director’s fees.

Retirement Plan Services provides information about our prototype retirement plans. The toll-free telephone number is (800) 445-1777 in the US and (212) 682-7600 outside the US.

Gifts Free of Federal Tax are often made using Tri-Continental Common Stock. You may give as much as $11,000 a year to as many individuals as desired free of federal gift tax, and a married couple may give up to $22,000 a year.

Stock Repurchase Program. In November 2002, the Board of Directors authorized the renewal of Tri-Continental’s ongoing share repurchase program. The program authorizes the Corporation to repurchase up to 7.5% of the Corporation’s shares over a 12-month period, provided that the discount of a share’s market price to its net asset value (“NAV”) remains wider than 10%. The Board’s decision benefits all stockholders, allowing them to continue to enjoy the advantages of Tri-Continental’s closed-end structure, while increasing the NAV of the Corporation’s outstanding shares.

     As of March 31, 2003, 3.5 million shares had been repurchased. This is approximately 2.8% of the shares outstanding as of November 20, 2002. The repurchase of additional shares is expected to continue between April and November 2003, as long as the discount remains above 10%.

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Tri-Continental Corporation

For information about your Corporation, write to Corporate Communications, J. & W. Seligman & Co. Incorporated, 100 Park Avenue, New York, NY 10017, or visit our website at www.tri-continental.com. If you want information about your investment account, write to Stockholder Services, Seligman Data Corp., at the same address. You may also call Stockholder Services at the telephone number listed below.

IMPORTANT TELEPHONE NUMBERS
Stockholder	Retirement Plan	24-Hour Automated
Services	Services	Telephone Access Service
(800) TRI-1092	(800) 445-1777	(800) 622-4597
(8:30 a.m. to 6:00 p.m. Eastern Time)	(8:30 a.m. to 6:00 p.m. Eastern Time)

212-682-7600 Outside the Continental United States

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Tri-Continental Corporation Managed by J. & W. SELIGMAN & CO. INCORPORATED Investment Managers and Advisors ESTABLISHED 1864 100 Park Avenue, New York, NY 10017 This report is intended only for the information of Stockholders or those who have received the current prospectus covering shares of Common Stock of Tri-Continental Corporation, which contains information about management fees and other costs. www.tri-continental.com CETRI3a 3/03