Dawn Svoronos - May 9, 2023 Form 4 Insider Report for ACELYRIN, Inc. (SLRN)

Role
Director
Signature
/s/ Mina Kim, Attorney-in-fact
Stock symbol
SLRN
Transactions as of
May 9, 2023
Transactions value $
$270,000
Form type
4
Date filed
5/11/2023, 09:11 PM
Previous filing
May 4, 2023
Next filing
Jun 2, 2023

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction SLRN Common Stock Purchase $270K +15K $18.00 15K May 9, 2023 Direct F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction SLRN Director Stock Option (right to buy) Other $0 -155K -100% $0.00* 0 May 9, 2023 Class A Common Stock 155K $5.88 Direct F2, F3
transaction SLRN Director Stock Option (right to buy) Other $0 +155K $0.00 155K May 9, 2023 Common Stock 155K $5.88 Direct F2, F3
transaction SLRN Director Stock Option (right to buy) Other $0 -23.2K -100% $0.00* 0 May 9, 2023 Class A Common Stock 23.2K $18.00 Direct F2, F4
transaction SLRN Director Stock Option (right to buy) Other $0 +23.2K $0.00 23.2K May 9, 2023 Common Stock 23.2K $18.00 Direct F2, F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Reflects shares purchased through a directed share program in the Issuer's initial public offering of Common Stock (the "IPO").
F2 Each share of Class A Common Stock was reclassified into one share of Common Stock immediately prior to the completion of the IPO.
F3 1/48 of the shares subject to the option vested on January 1, 2023 and 1/48 of the shares subject to the option vests in equal monthly installments thereafter, subject to the Reporting Person's continued service.
F4 1/36 of the shares subject to the option vest on June 4, 2023, and 1/36 of the shares subject to the option vest in equal monthly installments thereafter, subject to the Reporting Person's continued service.