Harold J. Schwartz - 14 Jan 2026 Form 4 Insider Report for Data Storage Corp (DTST)

Reporting relationship: Director, 10%+ Owner
Issuer ticker: DTST
Reported as of: 14 Jan 2026
Net transaction value: -$4,658,555
SEC form: 4
Accepted by SEC: 16 Jan 2026, 17:35:18 UTC
Prior SEC filing: 18 Dec 2025
Next SEC filing: 02 Feb 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 16 Jan 2026.

Key facts

This page summarizes Harold J. Schwartz's Form 4 filing for Data Storage Corp (DTST).
2 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 16 Jan 2026, 17:35.

Change

Previous filing in this sequence was filed on 18 Dec 2025.
Current net transaction value: -$4,658,555.

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: 16 Jan 2026

Reported non-derivative transactions

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

DTST transaction

Common Stock

Disposed to Issuer

Transaction value: $4,619,555
Shares: -888,376
Change %: -97%
Price: $5.20
Shares after: 28,471
Date: 14 Jan 2026
Ownership: Direct
Footnotes: F1, F2

DTST transaction

Common Stock

Disposed to Issuer

Transaction value: $39,000
Shares: -7,500
Change %: -100%
Price: $5.20
Shares after: 0
Date: 14 Jan 2026
Ownership: Systems Trading, Inc.
Footnotes: F3, F4

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

Represents sale of shares to issuer pursuant to issuer tender offer exempt under Rule 16b-3.

Footnote F2

Reflects a correction to the number of shares owned by the reporting person. Due to an administrative oversight, the reporting person's number of securities beneficially owned following the reported transaction in Item 5 of Table I in prior Form 4s was overstated by 20,735 shares.

Footnote F3

Reflects indirect holding of 7,500 shares of common stock that were inadvertently excluded from previous reports filed by the reporting person.

Footnote F4

Systems Trading, Inc. is a company owned by the reporting person and of which the reporting person currently serves as Chief Executive Officer and President.