Company: CSTL
Filing Date: 2025-11-03
Form Type: 10-Q
Source: 0001628280-25-048254
Chunk: 3

Company: CASTLE BIOSCIENCES INC
Filing Date: 2025-11-03
Form: 10-Q
Item: Item 1
Chunk 3
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— 8 Issuance of common stock from vested restricted stock units and payment of employees’ taxes123,576 — (615)— — (615)Net unrealized loss on marketable investment securities— — — — (61)(61)Net income— — — 8,920 — 8,920 BALANCE, JUNE 30, 202427,711,024 $28 $636,022 $(211,985)$(172)$423,893 Stock-based compensation expense— — 13,027 — — 13,027 Exercise of common stock options90,378 — 1,571 — — 1,571 Issuance of common stock from vested restricted stock units, performance stock units and payment of employees’ taxes117,959 — (1,294)— — (1,294)Issuance of common stock under the employee stock purchase plan56,447 — 944 — — 944 Net unrealized gain on marketable investment securities— — — — 645 645 Net income— — — 2,269 — 2,269 BALANCE, SEPTEMBER 30, 202427,975,808 $28 $650,270 $(209,716)$473 $441,055 

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.4

Table of ContentsCASTLE BIOSCIENCES, INC.CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY(UNAUDITED)(in thousands, except share data)

Common StockAdditionalPaid-inCapitalAccumulatedDeficitAccumulatedOther Comprehensive Income (Loss)TotalStockholders’EquitySharesAmountBALANCE, JANUARY 1, 202528,483,195 $28 $655,703 $(200,126)$230 $455,835 Stock-based compensation expense— — 11,179 — — 11,179 Exercise of common stock options6,331 — 18 — — 18 Issuance of common stock from vested restricted stock units and payment of employees’ taxes251,970 1 (2,517)— — (2,516)Issuance of common stock under the employee stock purchase plan103,441