GRAIL director Gregory L. Summe acquires 237 stock units

The award replaced $32,136.99 in cash director fees and vested immediately upon the grant date.

Rhea-AI Filing Summary

GRAIL, Inc. director Gregory L. Summe acquired 237 deferred stock units on October 15, 2026, in lieu of $32,136.99 in cash fees payable for his director service. The units were granted under the company’s deferred stock program and 2024 Equity Incentive Plan, based on a price of $135.46 per share, the closing price that day, and vest immediately upon grant. His reported direct holdings following the transaction were 45,909 shares.

Insider Trade Summary

Grant/Award: 237 shares

Grant/Award 1 txn

Insider SUMME GREGORY L

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock F1	237	$135.46	$32K

Holdings After Transaction: Common Stock — 45,909 shares (Direct)

Footnotes (1)

1. F1. Represents 237 deferred stock units granted to Mr. Summe under our deferred stock program and 2024 Equity Incentive Plan in lieu of $32,136.99 of cash fees payable to Mr. Summe for his service as a director, based on a price per share of $135.46, which was the closing price per share of the Company's common stock on October 15, 2026. The awards will vest immediately upon grant date.

Key Figures

Deferred stock units granted: 237 units Cash fees replaced: $32,136.99 Grant-date closing price: $135.46 per share +1 more

4 metrics

Deferred stock units granted 237 units October 15, 2026

Cash fees replaced $32,136.99 Fees payable for director service

Grant-date closing price $135.46 per share Closing price on October 15, 2026

Direct holdings after transaction 45,909 shares Reported following the transaction

Key Terms

deferred stock units, deferred stock program, 2024 Equity Incentive Plan

3 terms

deferred stock units financial

"237 deferred stock units granted to Mr. Summe"

Deferred stock units are promises from a company to give an employee shares of stock at a future date, often after certain conditions are met or after leaving the company. They function like a form of delayed compensation, allowing employees to earn shares over time. For investors, they represent potential future ownership in the company, but do not provide immediate voting rights or dividends until the shares are actually received.

deferred stock program financial

"under our deferred stock program"

2024 Equity Incentive Plan financial

"and 2024 Equity Incentive Plan"

FAQ

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What did GRAIL (GRAL) director Gregory L. Summe receive?

Gregory L. Summe acquired 237 deferred stock units on October 15, 2026, in lieu of $32,136.99 in cash fees payable for his director service. The units were based on a price of $135.46 per share, the closing price that day, and vest immediately upon grant.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

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Available on EDGAR 10/16/2026 - 04:51 PM EDT Accepted by SEC EDGAR 10/16/2026 - 04:50 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

SUMME GREGORY L

(Last) (First) (Middle)

C/O GRAIL, INC.

250 S. MATHILDA AVE. SUITE 100

(Street)

SUNNYVALE CALIFORNIA 94086

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
GRAIL, Inc. [ GRAL ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/15/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	10/15/2026		A		237(1)	A	$135.46	45,909	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents 237 deferred stock units granted to Mr. Summe under our deferred stock program and 2024 Equity Incentive Plan in lieu of $32,136.99 of cash fees payable to Mr. Summe for his service as a director, based on a price per share of $135.46, which was the closing price per share of the Company's common stock on October 15, 2026. The awards will vest immediately upon grant date.

Remarks:

	/s/Donald Lang, as Attorney-in-Fact for Gregory Summe	10/16/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)