Document


UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549


SCHEDULE 14A
Proxy Statement Pursuant to Section 14(a) of the
Securities Exchange Act of 1934
(Amendment No. )
Filed by the Registrant
x
Filed by a party other than the Registrant
o
Check the appropriate box:
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Preliminary Proxy Statement
o
Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
o
Definitive Proxy Statement
x
Definitive Additional Materials
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Soliciting Material under § 240.14a-12
ACELYRIN, INC.
(Name of Registrant as Specified In Its Charter)
(Name of Person(s) Filing Proxy Statement, if other than the Registrant)
Payment of Filing Fee (Check all boxes that apply):
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No fee required
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Fee paid previously with preliminary materials
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Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11



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