Beth C. Seidenberg - 04 May 2023 Form 3 Insider Report for ACELYRIN, Inc. (SLRN)

Role
Director, 10%+ Owner
Signature
/s/ Mina Kim, Attorney-in-fact
Issuer symbol
SLRN
Transactions as of
04 May 2023
Net transactions value
$0
Form type
3
Filing time
04 May 2023, 19:32:53 UTC
Previous filing
03 Apr 2023
Next filing
11 May 2023
SEC
View on sec.gov

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
holding SLRN Series A Redeemable Convertible Preferred Stock 04 May 2023 Class A Common Stock 4,056,795 See footnote F1, F2, F3
holding SLRN Series B Redeemable Convertible Preferred Stock 04 May 2023 Class A Common Stock 2,445,786 See footnote F1, F2, F3
holding SLRN Series C Redeemable Convertible Preferred Stock 04 May 2023 Class A Common Stock 2,038,148 See footnote F1, F2, F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Each share of preferred stock is convertible into one share of Class A Common Stock or, subject to and in accordance with certain provisions set forth in the Issuer's certificate of incorporation, Class B Common Stock, and has no expiration date. Immediately prior to the completion of the Issuer's initial public offering of Common Stock (the "IPO"), all shares of preferred stock will automatically convert into shares of Common Stock.
F2 Each share of Class A Common Stock shall be reclassified into one share of Common Stock immediately prior to the completion of the IPO.
F3 Shares held directly by Westlake BioPartners Fund II, L.P., or Westlake Fund II. Westlake BioPartners GP II, LLC, or Westlake GP II, is the general partner of Westlake Fund II. Westlake GP II may be deemed to have sole voting and dispositive power with regard to the shares held directly by Westlake Fund II. The Reporting Person and Sean E. Harper are the Managing Directors of Westlake GP II and share voting and dispositive power over the shares held by Westlake Fund II, each of whom disclaims beneficial ownership of the shares held by Westlake Fund II except to the extent of such person's pecuniary interest therein, if any.

Remarks:

Exhibit 24 - Power of Attorney