Ronald Oyston - 09 May 2023 Form 4 Insider Report for ACELYRIN, Inc. (SLRN)

Role
Chief People Officer
Signature
/s/ Mina Kim, Attorney-in-fact
Issuer symbol
SLRN
Transactions as of
09 May 2023
Net transactions value
+$18,468
Form type
4
Filing time
11 May 2023, 21:00:43 UTC
Previous filing
04 May 2023
Next filing
18 Aug 2023
SEC
View on sec.gov

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction SLRN Common Stock Purchase $18,000 +1,000 $18.00 1,000 09 May 2023 Direct F1
transaction SLRN Common Stock Purchase $468 +26 $18.00 26 09 May 2023 See footnote F1, F2

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 Employee Stock Option (right to buy) Other $0 -165,090 -100% $0.000000* 0 09 May 2023 Class A Common Stock 165,090 $4.04 Direct F3, F4
transaction SLRN Employee Stock Option (right to buy) Other $0 +165,090 $0.000000 165,090 09 May 2023 Common Stock 165,090 $4.04 Direct F3, F4
transaction SLRN Employee Stock Option (right to buy) Other $0 -2,150 -100% $0.000000* 0 09 May 2023 Class A Common Stock 2,150 $4.04 Direct F3, F5
transaction SLRN Employee Stock Option (right to buy) Other $0 +2,150 $0.000000 2,150 09 May 2023 Common Stock 2,150 $4.04 Direct F3, F5
transaction SLRN Employee Stock Option (right to buy) Other $0 -23,412 -100% $0.000000* 0 09 May 2023 Class A Common Stock 23,412 $5.88 Direct F3, F6
transaction SLRN Employee Stock Option (right to buy) Other $0 +23,412 $0.000000 23,412 09 May 2023 Common Stock 23,412 $5.88 Direct F3, F6
transaction SLRN Employee Stock Option (right to buy) Other $0 -16,613 -100% $0.000000* 0 09 May 2023 Class A Common Stock 16,613 $5.88 Direct F3, F7
transaction SLRN Employee Stock Option (right to buy) Other $0 +16,613 $0.000000 16,613 09 May 2023 Common Stock 16,613 $5.88 Direct F3, F7
transaction SLRN Employee Stock Option (right to buy) Other $0 -131,714 -100% $0.000000* 0 09 May 2023 Class A Common Stock 131,714 $18.00 Direct F3, F8
transaction SLRN Employee Stock Option (right to buy) Other $0 +131,714 $0.000000 131,714 09 May 2023 Common Stock 131,714 $18.00 Direct F3, F8
* 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 The shares are held of record by the Reporting Person's child.
F3 Each share of Class A Common Stock was reclassified into one share of Common Stock immediately prior to the completion of the IPO.
F4 1/4 of the shares subject to the option vested on November 1, 2022, and 1/48 of the shares subject to the option vests in equal monthly installments thereafter, subject to the Reporting Person's continued service.
F5 1/4 of the shares subject to the option vested on January 20, 2023, and 1/48 of the shares subject to the option vest in equal monthly installments thereafter, subject to the Reporting Person's continued service.
F6 1/4 of the shares subject to the option vest on October 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.
F7 1/4 of the shares subject to the option vest on November 17, 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.
F8 1/4 of the shares subject to the option vest on May 4, 2024, and 1/48 of the shares subject to the option vest in equal monthly installments thereafter, subject to the Reporting Person's continued service.