Biggest changeFor the Years Ended December 31, 2022 December 31, 2021 December 31, 2020 (dollars in thousands, except per share data) GAAP Net income (loss) available to common stockholders $ (586,831) $ 596,350 $ 15,104 Adjustments: Net unrealized (gains) losses on financial instruments at fair value 736,899 (437,357) 110,664 Net realized (gains) losses on sales of investments 76,473 (45,313) (166,946) (Gains) losses on extinguishment of debt 2,897 283,556 54,418 Interest expense on long term debt — 2,274 7,083 Increase (decrease) in provision for credit losses 7,037 33 180 Net unrealized (gains) losses on derivatives 1,482 — (201,000) Realized (gains) losses on terminations of interest rate swaps 561 — 463,966 Net realized (gains) losses on Treasury futures (1) — — 34,700 Transaction expenses 16,146 29,856 15,068 Stock Compensation expense for retirement eligible awards (205) (432) 414 Other investment (gains) losses 1,866 — — Earnings available for distribution $ 256,325 $ 428,967 $ 333,651 GAAP net income (loss) per diluted common share $ (2.51) $ 2.44 $ 0.07 Earnings available for distribution per adjusted diluted common share $ 1.08 $ 1.78 $ 1.46 (1) Included in net realized gains (losses) on derivatives in the Consolidated Statement of Operations The table below summarizes the reconciliation from weighted-average diluted shares under GAAP to the weighted average adjusted diluted shares used for Earnings available for distribution for the years ended December 31, 2022, 2021 and 2020. 52 For the Year Ended December 31, 2022 December 31, 2021 December 31, 2020 Weighted average diluted shares - GAAP 233,938,745 245,496,926 226,438,341 Potentially dilutive shares (1) 2,617,417 — 14,259,495 Non-participating Warrants — (5,070,543) (11,415,711) Adjusted weighted average diluted shares - Earnings available for distribution 236,556,162 240,426,383 229,282,125 (1) Potentially dilutive shares related to restricted stock units and performance stock units excluded from the computation of weighted average GAAP diluted shares because their effect would have been anti-dilutive given the GAAP net loss available to common shareholders for the years ended December 31, 2022, For the Quarters Ended December 31, 2022 September 30, 2022 June 30, 2022 March 31, 2022 December 31, 2021 (dollars in thousands, except per share data) GAAP Net income (loss) available to common stockholders $ 78,716 $ (204,583) $ (179,765) $ (281,202) $ (718) Adjustments: Net unrealized (gains) losses on financial instruments at fair value (112,026) 239,513 239,246 370,167 108,286 Net realized (gains) losses on sales of investments 39,443 37,031 — — — (Gains) losses on extinguishment of debt — — 2,897 — (980) Increase (decrease) in provision for credit losses 3,834 (1,534) 4,497 240 92 Net unrealized (gains) losses on derivatives 10,171 (10,307) 1,618 — — Realized (gains) losses on terminations of interest rate swaps 561 — — — — Transaction expenses 3,274 2,341 6,727 3,804 4,241 Stock Compensation expense for retirement eligible awards (309) (310) (309) 723 (363) Other investment (gains) losses 2,383 462 (980) — — Earnings available for distribution $ 26,047 $ 62,613 $ 73,931 $ 93,732 $ 110,558 GAAP net income (loss) per diluted common share $ 0.34 $ (0.88) $ (0.76) $ (1.19) $ — Earnings available for distribution per adjusted diluted common share $ 0.11 $ 0.27 $ 0.31 $ 0.39 $ 0.46 The table below summarizes the reconciliation from weighted-average diluted shares under GAAP to the weighted-average adjusted diluted shares used for Earnings available for distribution for the periods reported below.
Biggest changeEarnings available for distribution is presented on an adjusted dilutive shares basis. 53 For the Years Ended December 31, 2023 December 31, 2022 December 31, 2021 (dollars in thousands, except per share data) GAAP Net income (loss) available to common stockholders $ 52,354 $ (586,831) $ 596,350 Adjustments: Net unrealized (gains) losses on financial instruments at fair value (34,373) 736,899 (437,357) Net realized (gains) losses on sales of investments 31,234 76,473 (45,313) (Gains) losses on extinguishment of debt (3,875) 2,897 283,556 Interest expense on long term debt — — 2,274 Increase (decrease) in provision for credit losses 11,371 7,037 33 Net unrealized (gains) losses on derivatives 6,411 1,482 — Realized (gains) losses on terminations of interest rate swaps 40,957 561 — Transaction expenses 15,379 16,146 29,856 Stock Compensation expense for retirement eligible awards 966 (205) (432) Other investment (gains) losses (1,091) 1,866 — Earnings available for distribution $ 119,333 $ 256,325 $ 428,967 GAAP net income (loss) per diluted common share $ 0.23 $ (2.51) $ 2.44 Earnings available for distribution per adjusted diluted common share $ 0.51 $ 1.08 $ 1.78 (1) Included in net realized gains (losses) on derivatives in the Consolidated Statement of Operations The table below summarizes the reconciliation from weighted-average diluted shares under GAAP to the weighted average adjusted diluted shares used for Earnings available for distribution for the years ended December 31, 2023, 2022 and 2021.