Data Storage Corp (NASDAQ: DTST) director sells shares for tax withholding

Rhea-AI Filing Summary

Data Storage Corp director and 10% owner Thomas Kempster reported a small sale of common stock. On 12/10/2025, he sold 6,846 shares of Data Storage Corp common stock in a single reported transaction coded as a sale.

The shares were sold to satisfy tax withholding obligations, according to the explanation provided. The transaction was executed at a weighted average price of $4.9934, with individual trades occurring between $4.9518 and $5.0001. After this transaction, Kempster beneficially owned 871,972 shares of Data Storage Corp common stock directly.

Insider Trade Summary

Net Seller: 6,846 shares ($34,185)

Net Sell 1 txn

Insider Kempster Thomas

Role Director, 10% Owner

Sold 6,846 shs ($34K)

Type	Security	Shares	Price	Value
Sale	Common Stock	6,846	$4.9934	$34K

Holdings After Transaction: Common Stock — 871,972 shares (Direct)

Footnotes (1)

1. Represents shares of the Issuer's common stock sold to satisfy tax withholding obligations of Thomas Kempster (the "Reporting Person") The price reported is a weighted average price. These shares were disposed in multiple transactions at prices ranging from $4.9518 through $5.0001 (the "Range"), inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the Range.

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Form 4 Insider Transactions: What Each Field Means →

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^*

Kempster Thomas

(Last) (First) (Middle)

C/O DATA STORAGE CORP

244 5TH AVENUE, SUITE 2821

(Street)

NEW YORK NY 10001

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Data Storage Corp [ DTST ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
12/10/2025

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	12/10/2025		S		6,846(1)	D	$4.9934(2)	871,972	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 shares of the Issuer's common stock sold to satisfy tax withholding obligations of Thomas Kempster (the "Reporting Person")

2. The price reported is a weighted average price. These shares were disposed in multiple transactions at prices ranging from $4.9518 through $5.0001 (the "Range"), inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the Range.

	/s/ Wendy Schmittzeh, Attorney-in-fact	12/12/2025
	** 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 Data Storage Corp (DTST) report?

Data Storage Corp reported that Thomas Kempster, a director and 10% owner, sold 6,846 shares of its common stock on 12/10/2025.

How many DTST shares did Thomas Kempster sell and at what price?

Thomas Kempster sold 6,846 shares of Data Storage Corp common stock at a weighted average price of $4.9934, with individual sale prices ranging from $4.9518 to $5.0001.

Why were the Data Storage Corp (DTST) shares sold by Thomas Kempster?

The filing states that the 6,846 shares were sold to satisfy tax withholding obligations of Thomas Kempster.

What is Thomas Kempster’s ownership in Data Storage Corp (DTST) after the sale?

After the reported transaction, Thomas Kempster beneficially owned 871,972 shares of Data Storage Corp common stock directly.

Were any derivative securities reported for DTST in this insider filing?

The section for derivative securities shows no reported transactions, indicating no derivative securities were acquired or disposed of in this filing.