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 * Siegel Walter 2. Issuer Name and Ticker or Trading Symbol MSC INDUSTRIAL DIRECT CO INC [MSM] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) SVP, Gen Counsel & Corp Sec (Last) (First) (Middle) C/O MSC INDUSTRIAL DIRECT CO., INC., 515 BROADHOLLOW ROAD 3. Date of Earliest Transaction (Month/Day/Year) 11/03/2026 (Street) MELVILLE, NY 11747 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

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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

Options (right to buy)(1)

$120.3

11/03/2026

A

2,282

(2)

11/02/2036

Class A Common Stock, $0.001 par value

2,282

$ 0

2,282

D

Restricted Stock Units (RSU)

(3)

11/03/2026

A

1,097

(4)

(4)

Class A Common Stock, $0.001 par value

1,097

$ 0

1,097

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Siegel Walter C/O MSC INDUSTRIAL DIRECT CO., INC. 515 BROADHOLLOW ROAD MELVILLE, NY 11747			SVP, Gen Counsel & Corp Sec

Signatures

/s/ Walter Siegel		11/05/2026
**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)	Represents options to purchase the Issuer's Class A Common Stock, $0.001 par value ("Common Stock").
(2)	An option to purchase 2,282 shares of the Issuer's Common Stock was issued to the Reporting Person under the Issuer's 2023 Omnibus Equity Plan. 570 shares of Common Stock become exercisable on each of November 3, 2027 and November 3, 2028, and 571 shares of Common Stock become exercisable on each of November 3, 2029 and November 3, 2030.
(3)	Each RSU represents a contingent right to receive one share of Common Stock.
(4)	1,097 RSUs were granted on November 3, 2026. 274 RSUs vest on each of November 3, 2027, November 3, 2028, and November 3, 2029, and 275 RSUs vest on November 3, 2030, provided that the Reporting Person remains continuously employed by the Issuer through each applicable vesting date. The vested shares will be delivered to the Reporting Person upon vesting.

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