[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6,"_7":8},"actionData","errors","root",{"_105":106},"routes/item",{"_9":10},"item",{"_11":12,"_13":14,"_15":16,"_17":18,"_19":20,"_21":-5,"_22":23,"_24":25,"_26":27,"_28":29,"_30":29,"_31":32,"_33":34,"_35":36,"_37":38,"_39":40,"_41":42,"_43":44,"_45":-5,"_46":47,"_48":-5,"_49":-5,"_50":51,"_52":53,"_54":55,"_56":57,"_58":57,"_59":60,"_61":40,"_62":63},"id","kr0tbzhxsfof9fli9b9vifeei","revision",2,"title","Erasca, Inc. 重组领导职责，COO Nik Chetwyn 将于11月2日离职","originalTitle","8-K - Erasca, Inc. (0001761918) (Filer)","summary","Erasca, Inc. 重组领导职责，COO Nik Chetwyn 将于11月2日离职。公司称此举旨在支持RAS靶向项目开发与商业化。Erasca 为纳斯达克上市公司，股票代码 ERAS。","reason","source",{"_11":95,"_96":97,"_98":99,"_100":57,"_101":102,"_103":104},"links",{"_92":93,"_63":94},"publishedAt","2026-10-16T13:00:14.000Z","discoveredAt","2026-10-16T13:04:45.344Z","timelineAt","category","ai-products","tags",[89,90,91],"stockSymbols",[88],"score",30,"selected",false,"channel","news","story",{"_72":73,"_15":74},"x","readingMode","full","author","language","body",{"_84":-5,"_63":85,"_86":-5,"_87":40},"outline",[76,77],"relatedStories",[75],"indexable",true,"markdownAvailable","group",{"_64":65,"_43":66,"_67":68,"_69":70,"_71":70},"hasTranslation","bodyLanguage","original","factId","fUS-rQNUKyKk",{"_72":73,"_15":74},"reportCount",1,"additionalSourceCount",0,"developmentCount","publicId","95ecb803-38a4-495b-ba90-5317a2cd9117","Erasca重组领导层，COO宣布离职",{"_72":73,"_15":74},{"_11":82,"_79":83,"_81":14},{"_11":78,"_79":80,"_81":14},"sec-2","text","Item 5.02 Departure of Directors or Certain Officers; Election of Directors; App","level","sec-1","FORM 8-K","zh","

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

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

\n \n \n \n \n \n

Date of Report (Date of earliest event reported): October 15, 2026

Erasca, Inc.

(Exact name of Registrant as Specified in Its Charter)

\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n

\n	\n	\n	\n	\n
Delaware	001-40602	83-1217027
(State or Other Jurisdiction of Incorporation)	(Commission File Number)	(IRS Employer Identification No.)

3115 Merryfield Row Suite 300
San Diego, California		92121
(Address of Principal Executive Offices)		(Zip Code)

\n \n \n \n \n \n

Registrant’s Telephone Number, Including Area Code: (858) 465-6511

\n \n \n \n \n \n

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n

\n	\n	\n	\n	\n
Title of each class		Trading Symbol(s)		Name of each exchange on which registered
Common Stock, $0.0001 par value per share		ERAS		Nasdaq Global Select Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On October 15, 2026, Erasca, Inc. (the Company) decided to realign its leadership responsibilities to support the development and potential commercialization of its RAS-targeting programs. Responsibilities currently overseen by the Chief Operating Officer are transitioning to other members of the Company’s leadership team in order to streamline the Company’s reporting structure. Accordingly, the employment of Nicholas (Nik) Chetwyn, Ph.D., the Company’s Chief Operating Officer, will terminate effective November 2, 2026.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n

\n	\n	\n	\n
			Erasca, Inc.

Date:	October 15, 2026	By:	/s/ Ebun Garner
			Chief Legal Officer

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