Mina Kim - 15 May 2025 Form 4 Insider Report for ACELYRIN, Inc. (SLRN)

Role
Chief Executive Officer, Director
Signature
/s/ Eddie Kim, Attorney-in-fact
Issuer symbol
SLRN
Transactions as of
15 May 2025
Net transactions value
-$46,214
Form type
4
Filing time
19 May 2025, 16:46:15 UTC
Previous filing
19 Mar 2025
Next filing
23 May 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Kim Mina Chief Executive Officer, Director C/O ACELYRIN, INC., 4149 LIBERTY CANYON RD., AGOURA HILLS /s/ Eddie Kim, Attorney-in-fact 19 May 2025 0001668163

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction SLRN Common Stock Award $0 +30,851 +4.6% $0.000000 702,604 15 May 2025 Direct F1
transaction SLRN Common Stock Tax liability $23,955 -11,039 -1.6% $2.17 691,565 15 May 2025 Direct F2
transaction SLRN Common Stock Tax liability $22,260 -10,258 -1.5% $2.17 681,307 15 May 2025 Direct F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 On May 15, 2025, the Reporting Person vested in a portion of a previously granted performance-based restricted stock unit ("PSU") award pursuant to the terms of the Company's 2023 Equity Incentive Plan and the applicable PSU Award Agreement. The Compensation Committee certified that the Company achieved 64% of the performance goals related to Tranche 1 of 3, based on the volume-weighted average trading price over the 20-day period ending April 1, 2025. The remaining unvested PSUs from Tranche 1 were forfeited.
F2 Represents the total number of shares withheld to settle the Reporting Person's tax liability for the PSUs that vested on May 15, 2025.
F3 Represents the total number of shares withheld to settle the Reporting Person's tax liability for restricted stock units that vested on May 15, 2025.