Harold J. Schwartz - 16 Dec 2025 Form 4 Insider Report for Data Storage Corp (DTST)

Reporting relationship: Director, 10%+ Owner
Issuer ticker: DTST
Reported as of: 16 Dec 2025
Net transaction value: +$85,883
SEC form: 4
Accepted by SEC: 18 Dec 2025, 19:57:52 UTC
Prior SEC filing: 15 Sep 2025
Next SEC filing: 16 Jan 2026
Source filing: View source filing
Reporting owner signature: /s/ Wendy Schmittzeh, Attorney-in-fact

Key filing fact

Harold J. Schwartz filed Form 4 for Data Storage Corp (DTST) on 18 Dec 2025.

Key facts

This page summarizes Harold J. Schwartz's Form 4 filing for Data Storage Corp (DTST).
6 reported transactions and 3 derivative rows are listed below.
Accepted by SEC: 18 Dec 2025, 19:57.

Change

Previous filing in this sequence was filed on 15 Sep 2025.
Current net transaction value: +$85,883.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001688899 Primary reporting owner

Schwartz Harold J

Relationship: Director, 10%+ Owner
Address: C/O DATA STORAGE CORP, 244 5TH AVENUE, SUITE 2821, NEW YORK
Signature: /s/ Wendy Schmittzeh, Attorney-in-fact
Signature date: 18 Dec 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

DTST transaction

Common Stock

Options Exercise

Transaction value: $19,216
Shares: +9,804
Change %: +1.1%
Price: $1.96
Shares after: 910,563
Date: 16 Dec 2025
Ownership: Direct
Footnotes: F1

DTST transaction

Common Stock

Options Exercise

Transaction value: $33,334
Shares: +16,667
Change %: +1.8%
Price: $2.00
Shares after: 927,230
Date: 16 Dec 2025
Ownership: Direct
Footnotes: F2

DTST transaction

Common Stock

Options Exercise

Transaction value: $33,333
Shares: +10,352
Change %: +1.1%
Price: $3.22
Shares after: 937,582
Date: 16 Dec 2025
Ownership: Direct
Footnotes: F3

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

DTST transaction Derivative

Stock Option

Options Exercise

Transaction value: $0
Shares: +9,804
Change %
Price: $0.000000
Shares after: 0
Date: 16 Dec 2025
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 9,804
Exercise price: $1.96
Footnotes: F1

DTST transaction Derivative

Stock Option

Options Exercise

Transaction value: $0
Shares: +16,667
Change %
Price: $0.000000
Shares after: 0
Date: 16 Dec 2025
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 16,667
Exercise price: $2.00
Footnotes: F2

DTST transaction Derivative

Stock Option

Options Exercise

Transaction value: $0
Shares: +10,352
Change %
Price: $0.000000
Shares after: 0
Date: 16 Dec 2025
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 10,352
Exercise price: $3.22
Footnotes: F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

Represents shares of common stock issued upon exercise of the unexercised portion of a stock option that was issued to the Reporting Person on March 1, 2023, the unexercised portion of which vested in full immediately upon consummation of the divestiture of the Issuer's CloudFirst business on September 11, 2025. The Option is exercisable for a term of 5 years.

Footnote F2

Represents shares of common stock issued upon exercise of the unexercised portion of a stock option that was issued to the Reporting Person on April 10, 2023, the unexercised portion of which vested in full immediately upon consummation of the divestiture of the Issuer's CloudFirst business on September 11, 2025. The Option is exercisable for a term of 5 years.

Footnote F3

Represents shares of common stock issued upon exercise of the unexercised portion of a stock option that was issued to the Reporting Person on January 2, 2024, the unexercised portion of which vested in full immediately upon consummation of the divestiture of the Issuer's CloudFirst business on September 11, 2025. The Option is exercisable for a term of 5 years.