Thomas Kempster - 10 Dec 2025 Form 4 Insider Report for Data Storage Corp (DTST)

Role: Director, 10%+ Owner
Signature: /s/ Wendy Schmittzeh, Attorney-in-fact
Issuer symbol: DTST
Transactions as of: 10 Dec 2025
Net transactions value: -$34,185
Form type: 4
Filing time: 12 Dec 2025, 20:05:06 UTC
Previous filing: 15 Sep 2025
Next filing: 16 Jan 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Kempster Thomas	Director, 10%+ Owner	C/O DATA STORAGE CORP, 244 5TH AVENUE, SUITE 2821, NEW YORK	/s/ Wendy Schmittzeh, Attorney-in-fact	12 Dec 2025	0001688904

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	DTST	Common Stock	Sale	$34,185	-6,846	-0.78%	$4.99	871,972	10 Dec 2025	Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents shares of the Issuer's common stock sold to satisfy tax withholding obligations of Thomas Kempster (the "Reporting Person")
F2	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.

Content

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.