Middlesex director granted 865 MSEX shares

Klein Steven M reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Klein Steven M reported acquisition or exercise transactions in this Form 4 filing.

Middlesex Water Co director Steven M. Klein received a stock award of 865 common shares on April 1, 2026. The shares were valued at $52.05 per share based on the March 31, 2026 close under the company’s Outside Director Stock Compensation Plan. After the award, he directly holds 3,333 book-entry shares and 7,559 street-name shares.

Insider Trade Summary

Grant/Award: 865 shares

Grant/Award 2 txns

Insider Klein Steven M

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock (Book)	865	$52.05	$45K
holding	Common Stock (Street)	--	--	--

Holdings After Transaction: Common Stock (Book) — 3,333 shares (Direct); Common Stock (Street) — 7,559 shares (Direct)

Footnotes (1)

1. F1. Price as of close of business March 31, 2026, in accordance with the provision of the Issuer's Outside Director Stock Compensation Plan.

Key Figures

Shares granted: 865 shares Grant valuation price: $52.05 per share Book-entry holdings after transaction: 3,333 shares +1 more

4 metrics

Shares granted 865 shares Director stock award on April 1, 2026

Grant valuation price $52.05 per share Closing price on March 31, 2026 used for award

Book-entry holdings after transaction 3,333 shares Common Stock (Book) directly held after award

Street-name holdings after transaction 7,559 shares Common Stock (Street) directly held after reported update

Key Terms

Outside Director Stock Compensation Plan, Common Stock (Book), Common Stock (Street), Grant, award, or other acquisition

4 terms

Outside Director Stock Compensation Plan financial

"in accordance with the provision of the Issuer's Outside Director Stock Compensation Plan"

Common Stock (Book) financial

"security_title: "Common Stock (Book)""

Common Stock (Street) financial

"security_title: "Common Stock (Street)""

Grant, award, or other acquisition financial

"transaction_code_description: "Grant, award, or other acquisition""

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Middlesex Water (MSEX) director Steven M. Klein report on this Form 4?

Steven M. Klein reported an acquisition of 865 shares of Middlesex Water common stock. The shares were granted as compensation under the Outside Director Stock Compensation Plan and are not an open-market purchase or sale.

How many Middlesex Water (MSEX) shares did Steven M. Klein receive and at what value?

He received 865 shares of common stock, valued at $52.05 per share. The value reflects the closing market price on March 31, 2026, as specified by the Outside Director Stock Compensation Plan.

Is Steven M. Klein’s Middlesex Water (MSEX) Form 4 transaction a market trade?

No, it is a compensation-related stock award, coded as a grant or other acquisition. The footnote specifies pricing in line with the Outside Director Stock Compensation Plan, rather than an open-market buy or sell transaction.

How many Middlesex Water (MSEX) shares does Steven M. Klein hold after this award?

After the award, he directly holds 3,333 book-entry common shares and 7,559 street-name common shares. These holdings reflect his reported direct ownership positions following the April 1, 2026 grant transaction.

What does the Outside Director Stock Compensation Plan mean for MSEX director awards?

The plan governs how outside directors receive stock-based compensation and how awards are priced. In this case, Klein’s 865-share grant used the March 31, 2026 closing price of $52.05 per share to determine the reported value.

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

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Accepted by SEC EDGAR 04/01/2026 - 09:10 AM 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^*

Klein Steven M

(Last) (First) (Middle)

485C ROUTE 1 SOUTH

SUITE 400

(Street)

ISELIN NEW JERSEY 08830

(City) (State) (Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/01/2026

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 (Book)	04/01/2026		A		865	A	$52.05(1)	3,333	D
Common Stock (Street)								7,559	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. Price as of close of business March 31, 2026, in accordance with the provision of the Issuer's Outside Director Stock Compensation Plan.

Remarks:

	/s/Jay L. Kooper, Power of Attorney for Steven M. Klein	04/01/2026
	** 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)