Company: CSTL
Filing Date: 2025-08-04
Form Type: 10-Q
Source: 0001447362-25-000097
Chunk: 17

Company: CASTLE BIOSCIENCES INC
Filing Date: 2025-08-04
Form: 10-Q
Item: Item 1
Chunk 17
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 common stock equivalents. Contingently issuable PSU awards are included in the computation of diluted earnings (loss) per share when the applicable performance criteria would be met and the common shares would be issuable if the end of the reporting period were the end of the contingency period. However, potentially dilutive shares are excluded from the computation of diluted loss per share when their effect is antidilutive.

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Table of ContentsCASTLE BIOSCIENCES, INC.NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Continued)(UNAUDITED)

The following table shows the computation of basic and diluted earnings (loss) per share for the following three and six months ended June 30, 2025 and 2024 (in thousands, except per share data): Three Months EndedJune 30,Six Months EndedJune 30, 2025202420252024Numerator:Net income (loss)$4,523 $8,920 $(21,325)$6,386 Denominator:Weighted-average common shares outstanding, basic28,914 27,646 28,763 27,566 Assumed exercise of stock options361 440 — 441 Assumed vesting of RSUs186 546 — 427 Assumed vesting of PSUs84 98 — 98 Assumed issuance of shares under the ESPP— 8 — 10 Weighted-average common shares outstanding, diluted29,545 28,738 28,763 28,542 Earnings (loss) per share:Basic$0.16 $0.32 $(0.74)$0.23 Diluted$0.15 $0.31 $(0.74)$0.22 Due to the Company reporting a net loss attributable to common stockholders for the six months ended June 30, 2025, all potentially dilutive securities are antidilutive and are excluded from the computations of diluted loss per share.The table below provides the weighted-average number of potential common shares associated with outstanding securities not included in our calculation of diluted earnings (loss) per share for the three and six months ended June 30, 2025 and 2024 because to do so would be antidilutive. With regard to the PSUs, we assume that the associated performance targets will be met at the target level of performance for purposes of calculating diluted earnings per common share until such time that it is probable that actual