Statement of Changes in Beneficial Ownership (Form 4)

FORM 4 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 that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * Barber Michael J 2. Issuer Name and Ticker or Trading Symbol EXACT SCIENCES CORP [EXAS] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 5505 ENDEAVOR LANE 3. Date of Earliest Transaction (Month/Day/Year) 03/23/2026 (Street) MADISON, WI 53719 4. If Amendment, Date Original Filed (Month/Day/Year) 6. Individual or Joint/Group Filing (Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) 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 03/23/2026 D 7,738 D (1) 5,398 D Common Stock 03/23/2026 D 5,398 D (2) 0 D

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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 Underlying Securities (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 of Derivative Security: 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

Deferred Stock Units(3)

$ 0

03/23/2026

D

7,422(4)

(4)

(4)

Common Stock

7,422

$ 0

0

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Barber Michael J 5505 ENDEAVOR LANE MADISON, WI 53719	X

Signatures

/s/ Michael Barber by Mark Busch, attorney-in- fact		03/23/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	On March 23, 2026, pursuant to the terms of that certain Agreement and Plan of Merger (the "Merger Agreement"), dated as of November 19, 2025, by and among Exact Sciences Corporation, a Delaware corporation (the "Issuer"), Abbott Laboratories, an Illinois corporation ("Parent"), and Badger Merger Sub I, Inc., a Delaware corporation and a direct, wholly owned subsidiary of Parent ("Merger Sub"), Merger Sub merged with and into the Issuer (the "Merger"), with the Issuer surviving the Merger as a direct, wholly owned subsidiary of Parent. At the effective time of the Merger (the "Effective Time"), on the terms and subject to the conditions set forth in the Merger Agreement, each share of the Issuer's common stock, par value $0.01 per share ("Common Stock"), issued and outstanding immediately prior to the Effective Time, with certain exceptions, was converted into the right to receive $105.00 in cash, without interest (the "Merger Consideration").
(2)	At the Effective Time, each share of Common Stock subject to vesting, repurchase or other lapse restriction and that was granted under an Issuer stock plan and outstanding as of immediately prior to the Effective Time was deemed to be fully vested and cancelled and converted into the right to receive the Merger Consideration, less any applicable tax withholding.
(3)	Represents deferred stock unit award issued pursuant to the Company's non-employee director compensation policy (each a "DSU"). Each DSU represents a contingent right to receive one share of Exact Sciences Corporation common stock.
(4)	At the Effective Time, each DSU outstanding as of immediately prior to the Effective Time was deemed to be fully vested and cancelled and converted into the right to receive the Merger Consideration in respect of each share of Common Stock subject to such DSU, less any applicable tax withholding.

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