Company: CSTL
Filing Date: 2025-04-09
Form Type: DEF 14A
Source: 0001447362-25-000054
Chunk: 86

Company: CASTLE BIOSCIENCES INC
Filing Date: 2025-04-09
Form: DEF 14A
Chunk 86
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2018 Plan, outstanding options to purchase 2,558,577 shares of common stock under the 2019 Plan, 2,697,689 outstanding RSUs under the 2019 Plan, 275,528 outstanding PSUs under the 2019 Plan, and 500,034 outstanding RSUs under the Castle Biosciences, Inc. 2022 Inducement Plan (the “Inducement Plan”). Excludes purchase rights accruing under the ESPP. Shares reserved for issuance under the ESPP are included in column (c).

(3) As RSU and PSU awards have no exercise price, the weighted-average exercise price excludes 2,697,689 outstanding RSUs and 275,528 outstanding PSUs.

(4) Includes 791,974 shares available for issuance under the 2019 Plan and 1,046,680 shares available for purchase under the ESPP. Excludes automatic increases of 1,424,159 shares and 284,831 shares for the 2019 Plan and the ESPP, respectively, that became effective January 1, 2025, pursuant to “evergreen” provisions in the 2019 Plan and the ESPP. On February 28, 2025, 103,441 shares of common stocks were purchased under the ESPP.

(5) Consists of the Inducement Plan. See below under “—Inducement Plan” for details.

### INDUCEMENT PLAN
On December 22, 2022, our board of directors adopted and approved the Inducement Plan.

Eligible Award Recipients. The Inducement Plan is used exclusively for grants of awards to individuals that were not previously employees or directors of the Company, as an inducement material to the individual’s entry into employment with the Company under Nasdaq Marketplace Rule 5635(c)(4) and the related guidance under Nasdaq IM 5635-1.

#### Castle Biosciences 2025 Proxy Statement81

#### Equity Compensation Plan Information
Stock Awards. The Inducement Plan provides for the grant of nonstatutory stock options (“NSOs”), stock appreciation rights, restricted stock awards, RSU awards, performance stock awards, performance cash awards and other forms of stock awards.

Authorized Shares. The initial maximum number of shares of our common stock that may be issued under the Inducement Plan is 350,000 shares. On December 4, 2023, the Board approved an amendment to the Inducement Plan