On which dates did the DTST CEO’s reported share sales occur?

The reported sales occurred on May 21, 2026, May 22, 2026, and May 26, 2026. Each date corresponds to a separate open-market sale entry, with share counts and weighted average prices specified for Data Storage Corp common stock.

Were any of the DTST CEO’s share sales related to tax withholding obligations?

Yes. A footnote states that the reported shares include stock sold to satisfy Charles M. Piluso’s tax withholding obligations. This indicates at least part of the disposition was linked to covering associated tax liabilities rather than purely discretionary selling.

Data Storage (DTST) CEO sells shares, partly for tax withholding

Filing Impact

(Moderate)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

Data Storage Corp (DTST) Chairman and CEO Charles M. Piluso reported selling a total of 86,958 shares of common stock in three open-market transactions. The sales occurred on May 21, 2026, May 22, 2026, and May 26, 2026 at weighted average prices between $3.80 and $3.95 per share.

After these transactions, Piluso directly holds 223,074 shares of Data Storage Corp common stock. A footnote explains that shares were sold to satisfy tax withholding obligations, and that each reported price is a weighted average for multiple trades within the stated ranges.

Insider Trade Summary

Net Seller: 86,958 shares ($333,310)

Net Sell 3 txns

Insider Piluso Charles M.

Role Chairman and CEO

Sold 86,958 shs ($333K)

Type	Security	Shares	Price	Value
Sale	Common Stock	32,610	$3.82	$125K
Sale	Common Stock	41,793	$3.82	$160K
Sale	Common Stock	12,555	$3.91	$49K

Holdings After Transaction: Common Stock — 223,074 shares (Direct, null)

Footnotes (1)

Represents shares of the Issuer's common stock sold to satisfy tax withholding obligations of Charles M. Piluso (the "Reporting Person"). The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $3.90 through $3.95. The Reporting Person undertakes to provide to the registrant, any security holder of the registrant, 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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $3.80 through $3.92. The Reporting Person undertakes to provide to the registrant, any security holder of the registrant, 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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $3.80 through $3.83. The Reporting Person undertakes to provide to the registrant, any security holder of the registrant, 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.

Key Figures

Total shares sold: 86,958 shares Shares sold on May 21, 2026: 12,555 shares at $3.91 Shares sold on May 22, 2026: 41,793 shares at $3.82 +2 more

5 metrics

Total shares sold 86,958 shares Aggregate open-market sales reported in Form 4

Shares sold on May 21, 2026 12,555 shares at $3.91 Open-market sale of common stock

Shares sold on May 22, 2026 41,793 shares at $3.82 Open-market sale of common stock

Shares sold on May 26, 2026 32,610 shares at $3.82 Open-market sale of common stock

Shares held after transactions 223,074 shares Direct ownership after latest reported sale

Key Terms

open-market sale, weighted average price, tax withholding obligations

3 terms

open-market sale financial

"transaction_action: "open-market sale" for each common stock transaction"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

weighted average price financial

"The price reported in Column 4 is a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

tax withholding obligations financial

"shares of the Issuer's common stock sold to satisfy tax withholding obligations"

Form 4 Insider Transactions: What Each Field Means →

05/26/2026 - 09:52 PM

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^*

Piluso Charles M.

(Last)

(First)

(Middle)

C/O DATA STORAGE CORP

244 5TH AVENUE, 2ND FLOOR, SUITE 2821

(Street)

NEW YORK

10001

(City)

(State)

(Zip)

UNITED STATES

(Country)

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
X	Officer (give title below)		Other (specify below)
	Chairman and CEO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/21/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	05/21/2026		S		12,555⁽¹⁾	D	$3.91⁽²⁾	297,477	D
Common Stock	05/22/2026		S		41,793⁽¹⁾	D	$3.82⁽³⁾	255,684	D
Common Stock	05/26/2026		S		32,610⁽¹⁾	D	$3.82⁽⁴⁾	223,074	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. Represents shares of the Issuer's common stock sold to satisfy tax withholding obligations of Charles M. Piluso (the "Reporting Person").

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $3.90 through $3.95. The Reporting Person undertakes to provide to the registrant, any security holder of the registrant, 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.

3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $3.80 through $3.92. The Reporting Person undertakes to provide to the registrant, any security holder of the registrant, 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.

4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $3.80 through $3.83. The Reporting Person undertakes to provide to the registrant, any security holder of the registrant, 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	05/26/2026
	** 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.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR

FAQ

How many Data Storage Corp (DTST) shares did the CEO sell in this Form 4?

Charles M. Piluso reported selling 86,958 shares of Data Storage Corp common stock. The transactions were split across three trading days, reflecting multiple open-market sales at weighted average prices disclosed in the filing’s transaction details and footnotes.

What prices were received for the DTST shares sold by the CEO?

Reported weighted average prices were $3.91 on May 21, 2026 and $3.82 on May 22 and May 26, 2026. Footnotes add that actual trade prices ranged from $3.80 to $3.95 per share across multiple transactions.

How many Data Storage Corp (DTST) shares does the CEO hold after these transactions?

Following the reported sales, Charles M. Piluso directly holds 223,074 shares of Data Storage Corp common stock. This post-transaction holding figure is disclosed in the Form 4 for the most recent transaction date reported.

What type of transactions are reported in this DTST Form 4 filing?

All reported transactions are open-market sales of Data Storage Corp common stock, coded as “S” in the Form 4. The filing specifies they are non-derivative transactions and provides weighted average prices and share counts for each sale.