Data Storage Corp (NASDAQ: DTST) director, 10% owner sells 881K shares

Rhea-AI Filing Summary

Data Storage Corp director and 10% owner Kempster Thomas reported a sale of 881,472 shares of common stock at $5.20 per share on January 14, 2026. The transaction was coded as a disposal and left him with 0 shares beneficially owned directly after the sale. The shares were sold back to the company in connection with an issuer tender offer that is described as exempt under Rule 16b-3. The reported amount also reflects an additional 9,500 shares of common stock that had been inadvertently omitted from Thomas’s earlier ownership reports.

Positive

• None.

Negative

• Director and 10% owner fully exits reported position: Kempster Thomas disposed of 881,472 shares of Data Storage Corp common stock at $5.20 per share on January 14, 2026, leaving him with 0 shares beneficially owned following the transaction.

Insights

Corporate governance and insider-transactions analyst

Large insider exits position via issuer tender offer, fully clearing reported holdings.

The report shows that director and 10% owner Kempster Thomas disposed of 881,472 shares of Data Storage Corp common stock at $5.20 per share on January 14, 2026. The transaction code is a disposal and the post-transaction balance is listed as 0 shares beneficially owned, indicating a full exit of his reported position.

The footnote explains that the shares were sold to the issuer pursuant to an issuer tender offer that is exempt under Rule 16b-3, which governs certain insider transactions, and that the figure includes 9,500 shares that were inadvertently excluded from previous reports. This links the sale to a company-run tender rather than open-market selling, while also cleaning up prior reporting. Subsequent company disclosures may provide additional context on the tender offer’s overall size and impact.

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
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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^*

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)
01/14/2026

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	01/14/2026		D		881,472(1)(2)	D	$5.2	0	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 sale of shares to issuer pursuant to issuer tender offer exempt under Rule 16b-3.

2. Includes 9,500 shares of common stock that were inadvertently excluded from previous reports filed by the reporting person.

	/s/ Wendy Schmittzeh, Attorney-in-fact	01/16/2026
	** 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

Who is the insider involved in this Data Storage Corp (DTST) Form 4 filing?

The filing identifies Kempster Thomas as the reporting person. He is listed as both a director and a 10% owner of Data Storage Corp.

How many Data Storage Corp (DTST) shares did Kempster Thomas sell and at what price?

Kempster Thomas reported the disposal of 881,472 shares of Data Storage Corp common stock at a price of $5.20 per share on January 14, 2026.

How many Data Storage Corp (DTST) shares does Kempster Thomas own after this transaction?

Following the reported transaction, the Form 4 lists 0 shares of Data Storage Corp common stock as beneficially owned by Kempster Thomas.

Was the Data Storage Corp (DTST) insider sale part of an issuer tender offer?

Yes. A footnote states that the transaction represents sale of shares to the issuer pursuant to an issuer tender offer that is exempt under Rule 16b-3.

What does the footnote about 9,500 shares mean in the DTST Form 4?

The filing notes that the total includes 9,500 shares of common stock that were inadvertently excluded from previous reports filed by Kempster Thomas, effectively correcting earlier ownership disclosures.

Does this Data Storage Corp (DTST) Form 4 involve any derivative securities?

No derivative securities are reported. The Form 4 only lists a transaction in common stock under the non-derivative securities table.