8. INCOME/(LOSS) PER SHARE

The following table sets forth the computation of basic and diluted income/(loss) per share for the periods presented (dollars and shares in thousands, except per share data):

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Basic income/(loss) per common share is computed based upon the weighted average number of common shares outstanding. Diluted income/(loss) per common share is computed based upon the weighted average number of common shares outstanding plus the common shares issuable from the assumed conversion of the OP Units and DownREIT Units, convertible preferred stock, stock options, unvested long-term incentive plan units (“LTIP Units”), performance units, unvested restricted stock and continuous equity program forward sales agreements. Only those instruments having a dilutive impact on our basic income/(loss) per share are included in diluted income/(loss) per share during the periods. For the three and six months ended June 30, 2024, the effect of the conversion of the OP Units, DownREIT Units and the Company’s Series E preferred stock was not dilutive and therefore not included in the above calculation. For the three and six months ended June 30, 2023, the effect of the conversion of the OP Units and DownREIT Units was not dilutive and therefore not included in the above calculation.

In July 2021, the Company entered into an ATM sales agreement under which the Company may offer and sell up to 20.0 million shares of its common stock, from time to time, to or through its sales agents and may enter into separate forward sales agreements to or through its forward purchasers. Upon entering into the ATM sales agreement, the Company simultaneously terminated the sales agreement for its prior at-the-market equity offering program, which was entered into in July 2017. During the three and six months ended June 30, 2024, the Company did not sell any shares of common stock through its ATM program. As of June 30, 2024, we had 14.0 million shares of common stock available for future issuance under the ATM program.

In connection with any forward sales agreement under the Company’s ATM program, the relevant forward purchasers will borrow from third parties and, through the relevant sales agent, acting in its role as forward seller, sell a number of shares of the Company’s common stock equal to the number of shares underlying the agreement. The Company does not initially receive any proceeds from any sale of borrowed shares by the forward seller.

For the three and six months ended June 30, 2024, the Company did not enter into any forward purchase agreements under its continuous equity program.

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The following table sets forth the additional shares of common stock outstanding, by equity instrument, if converted to common stock for each of the three and six months ended June 30, 2024 and 2023 (in thousands):

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