Middlesex Water (MSEX) director sells 300 shares at $55.21

Rhea-AI Filing Summary

Middlesex Water Company director Walter G. Reinhard reported an open-market sale of 300 shares of common stock at $55.21 per share on March 4, 2026. After this transaction, he directly owns 6,051 shares of Middlesex Water common stock.

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

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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^*

REINHARD WALTER G

(Last) (First) (Middle)

485C ROUTE 1 SOUTH

SUITE 400

(Street)

ISELIN NJ 08830

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
MIDDLESEX WATER CO [ MSEX ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
03/04/2026

4. If Amendment, Date of 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

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 (Street)	03/04/2026		S		300	D	$55.21	6,051	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:

Remarks:

	/s/ Jay L. Kooper, Power of Attorney for Walter G. Reinhard	03/04/2026
	** 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.

FAQ

What insider transaction did Middlesex Water (MSEX) director Walter G. Reinhard report?

Director Walter G. Reinhard reported selling 300 shares of Middlesex Water common stock. The transaction was an open-market sale at $55.21 per share, and it reduced his direct holdings but left him with 6,051 shares after the sale.

How many Middlesex Water (MSEX) shares did Walter G. Reinhard sell and at what price?

Walter G. Reinhard sold 300 shares of Middlesex Water common stock at $55.21 per share. This reported open-market sale involved non-derivative common stock and was disclosed as part of his insider holdings changes.

What are Walter G. Reinhard’s remaining Middlesex Water (MSEX) holdings after the reported sale?

After the reported sale, Walter G. Reinhard directly owns 6,051 shares of Middlesex Water common stock. This figure reflects his position following the 300-share open-market sale at $55.21 per share reported in the insider filing.

Was the Middlesex Water (MSEX) insider transaction a buy or a sell?

The reported Middlesex Water insider transaction was a sell. Director Walter G. Reinhard executed an open-market sale of 300 shares of common stock at $55.21 per share, as classified under a sale in open-market or private transaction code.

What type of security did Walter G. Reinhard trade in his Middlesex Water (MSEX) filing?

Walter G. Reinhard traded non-derivative common stock, listed as “Common Stock (Street).” The transaction disclosed a sale of 300 shares at $55.21 per share, leaving him with direct ownership of 6,051 Middlesex Water common shares afterward.