Comparable stake leader
Todd A. Correll
SEC ownership of Data Storage Corp
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001419951.
Disclosed value leader
Charles M. Piluso
Comparable rows
24/29
Latest evidence
02 Sep 2026
- Public ticker
- DTST on Nasdaq
- Parsed ownership sources
-
3/4/5 and 13F
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
Todd A. Correll
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
24 of 29
Meaning: Rows with safely comparable ownership %
- Latest parsed ownership date
-
02 Sep 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001419951
- Issuer location
- New York, NY
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
2 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of Data Storage Corp (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Todd A. Correll
Disclosed value leader
Charles M. Piluso
Comparable rows
24/29
Latest evidence
02 Sep 2026
3/4/5
13F
Lead comparable stake: 0.37%
5 rows are not safely comparable across share classes.
Showing 1-8 of 29 holder rows.
Quick read
Todd A. Correll leads the comparable SEC ownership view at 0.37%.
24 of 29 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Todd A. Correll's linked filing trail.
Comparable ownership
Top 5
Todd A. Correll
0.37%
Harold J. Schwartz
0.34%
Clifford Stein
0.15%
John Argen
0.15%
Lawrence A. Maglione
0.15%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 29 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Todd A. Correll |
3/4/5
Director
|
0.37%
|
$191,613
55,540 shares
|
-$51,936 | 02 Sep 2026 |
| Harold J. Schwartz |
3/4/5
Director
|
0.34%
|
$203,710
50,471 shares
mixed-class rows
|
— | 02 Sep 2026 |
| Clifford Stein |
3/4/5
Director
|
0.15%
|
$75,900
22,000 shares
|
— | 02 Sep 2026 |
| John Argen |
3/4/5
Director
|
0.15%
|
$75,900
22,000 shares
|
— | 02 Sep 2026 |
| Lawrence A. Maglione |
3/4/5
Director
|
0.15%
|
$75,900
22,000 shares
|
-$107,784 | 02 Sep 2026 |
| Matthew Grover |
3/4/5
Director
|
0.15%
|
$75,900
22,000 shares
|
— | 02 Sep 2026 |
| Nancy M. Stallone |
3/4/5
Director
|
0.15%
|
$75,900
22,000 shares
|
— | 02 Sep 2026 |
| Uwayne A. Mitchell |
3/4/5
Director
|
0.15%
|
$75,900
22,000 shares
|
— | 02 Sep 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$682,719.
Buys
$0
Insiders: 0
Sells
$682,719
Insiders: 5
Net
-$682,719
Shares: -156,946
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 156,946
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 86,958 | $0 | $333,310 | -$333,310 |
| 6-9 | 0 | 3,298 | $0 | $16,584 | -$16,584 |
| 9-12 | 0 | 66,690 | $0 | $332,826 | -$332,826 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-13 of 13 reporting-owner rows connected to Data Storage Corp. Open a relationship link for the CIK-to-CIK filing trail.
Rows
13
Largest Forms 3/4/5 holder
Charles M. Piluso
Net 12M change
-$682,719
Latest report
02 Sep 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Charles M. Piluso | Chairman and CEO, Director, 10%+ Owner | $889,691 | -$433,622 | -33% | Mixed | 21 May 2026 |
| Mark Alexander Wyllie | Executive Vice President, Director | $204,000 | Mixed | 17 May 2022 | ||
| Harold J. Schwartz | Director | $203,710 | Mixed | 02 Sep 2026 | ||
| Todd A. Correll | Director | $191,613 | -$51,936 | -21% | Median | 02 Sep 2026 |
| Thomas Kempster | Director | $102,986 | -$34,185 | -25% | Mixed | 02 Sep 2026 |
| Lawrence A. Maglione | Director | $75,900 | -$107,784 | -59% | Median | 02 Sep 2026 |
| Nancy M. Stallone | Director | $75,900 | Median | 02 Sep 2026 | ||
| Clifford Stein | Director | $75,900 | Median | 02 Sep 2026 | ||
| Matthew Grover | Director | $75,900 | Median | 02 Sep 2026 | ||
| Uwayne A. Mitchell | Director | $75,900 | Median | 02 Sep 2026 | ||
| John Argen | Director | $75,900 | Median | 02 Sep 2026 | ||
| Joseph B. Hoffman | Director | $25,500 | Mixed | 30 Sep 2023 | ||
| Christos Panagiotakos | Chief Financial Officer | $18,775 | -$55,192 | -75% | Mixed | 13 Feb 2026 |
Recent insider transactions for Data Storage Corp
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Todd A. Correll | DTST | Common Stock | Award | 27.6% | 12,000 | 55,540 | 02 Sep 2026 | Direct | ||
| Todd A. Correll | DTST | Common Stock | Options Exercise | 29.8% | 10,000 | 43,540 | 02 Sep 2026 | Direct | ||
| Todd A. Correll | DTST | Restricted Stock Unit | Options Exercise | -100% | -10,000 | 0 | 02 Sep 2026 | Direct | ||
| Harold J. Schwartz | DTST | Common Stock | Award | 31.2% | 12,000 | 50,471 | 02 Sep 2026 | Direct | ||
| Harold J. Schwartz | DTST | Common Stock | Options Exercise | 35.1% | 10,000 | 38,471 | 02 Sep 2026 | Direct | ||
| Harold J. Schwartz | DTST | Restricted Stock Unit | Options Exercise | -100% | -10,000 | 0 | 02 Sep 2026 | Direct | ||
| Clifford Stein | DTST | Common Stock | Award | 120% | 12,000 | 22,000 | 02 Sep 2026 | Direct | ||
| Clifford Stein | DTST | Common Stock | Options Exercise | 10,000 | 10,000 | 02 Sep 2026 | Direct | |||
| Clifford Stein | DTST | Restricted Stock Unit | Options Exercise | -100% | -10,000 | 0 | 02 Sep 2026 | Direct | ||
| Nancy M. Stallone | DTST | Common Stock | Award | 120% | 12,000 | 22,000 | 02 Sep 2026 | Direct | ||
| Nancy M. Stallone | DTST | Common Stock | Options Exercise | 10,000 | 10,000 | 02 Sep 2026 | Direct | |||
| Nancy M. Stallone | DTST | Restricted Stock Unit | Options Exercise | -100% | -10,000 | 0 | 02 Sep 2026 | Direct | ||
| Uwayne A. Mitchell | DTST | Common Stock | Award | 120% | 12,000 | 22,000 | 02 Sep 2026 | Direct | ||
| Uwayne A. Mitchell | DTST | Common Stock | Options Exercise | 10,000 | 10,000 | 02 Sep 2026 | Direct | |||
| Uwayne A. Mitchell | DTST | Restricted Stock Unit | Options Exercise | -100% | -10,000 | 0 | 02 Sep 2026 | Direct | ||
| Lawrence A. Maglione | DTST | Common Stock | Award | 120% | 12,000 | 22,000 | 02 Sep 2026 | Direct | ||
| Lawrence A. Maglione | DTST | Common Stock | Options Exercise | 10,000 | 10,000 | 02 Sep 2026 | Direct | |||
| Lawrence A. Maglione | DTST | Restricted Stock Unit | Options Exercise | -100% | -10,000 | 0 | 02 Sep 2026 | Direct | ||
| Thomas Kempster | DTST | Common Stock | Award | 120% | 12,000 | 22,000 | 02 Sep 2026 | Direct | ||
| Thomas Kempster | DTST | Common Stock | Options Exercise | 10,000 | 10,000 | 02 Sep 2026 | Direct | |||
| Thomas Kempster | DTST | Restricted Stock Unit | Options Exercise | -100% | -10,000 | 0 | 02 Sep 2026 | Direct | ||
| Matthew Grover | DTST | Common Stock | Award | 120% | 12,000 | 22,000 | 02 Sep 2026 | Direct | ||
| Matthew Grover | DTST | Common Stock | Options Exercise | 10,000 | 10,000 | 02 Sep 2026 | Direct | |||
| Matthew Grover | DTST | Restricted Stock Unit | Options Exercise | -100% | -10,000 | 0 | 02 Sep 2026 | Direct | ||
| John Argen | DTST | Common Stock | Award | 120% | 12,000 | 22,000 | 02 Sep 2026 | Direct | ||
| John Argen | DTST | Common Stock | Options Exercise | 10,000 | 10,000 | 02 Sep 2026 | Direct | |||
| John Argen | DTST | Restricted Stock Unit | Options Exercise | -100% | -10,000 | 0 | 02 Sep 2026 | Direct | ||
| Charles M. Piluso | DTST | Common Stock | Sale | -12.8% | $124,570 | $3.82 | -32,610 | 223,074 | 26 May 2026 | Direct |
| Charles M. Piluso | DTST | Common Stock | Sale | -14% | $159,649 | $3.82 | -41,793 | 255,684 | 22 May 2026 | Direct |
| Charles M. Piluso | DTST | Common Stock | Sale | -4.05% | $49,090 | $3.91 | -12,555 | 297,477 | 21 May 2026 | Direct |
| Christos Panagiotakos | DTST | Common Stock | Award | 148.1% | 60,000 | 100,507 | 13 Feb 2026 | Direct | ||
| Christos Panagiotakos | DTST | Stock Options | Award | 125,000 | 125,000 | 13 Feb 2026 | Direct | |||
| Charles M. Piluso | DTST | Common Stock | Award | 24% | 60,000 | 310,032 | 13 Feb 2026 | Direct | ||
| Charles M. Piluso | DTST | Stock Options | Award | 250,000 | 250,000 | 13 Feb 2026 | Direct | |||
| Charles M. Piluso | DTST | Common Stock | Award | 179.6% | 160,600 | 250,032 | 09 Feb 2026 | Direct | ||
| Harold J. Schwartz | DTST | Restricted Stock Unit | Award | 10,000 | 10,000 | 29 Jan 2026 | Direct | |||
| Matthew Grover | DTST | Restricted Stock Unit | Award | 10,000 | 10,000 | 29 Jan 2026 | Direct | |||
| Todd A. Correll | DTST | Restricted Stock Unit | Award | 10,000 | 10,000 | 29 Jan 2026 | Direct | |||
| Lawrence A. Maglione | DTST | Restricted Stock Unit | Award | 10,000 | 10,000 | 29 Jan 2026 | Direct | |||
| Uwayne A. Mitchell | DTST | Restricted Stock Unit | Award | 10,000 | 10,000 | 29 Jan 2026 | Direct | |||
| John Argen | DTST | Restricted Stock Unit | Award | 10,000 | 10,000 | 29 Jan 2026 | Direct | |||
| Thomas Kempster | DTST | Restricted Stock Unit | Award | 10,000 | 10,000 | 29 Jan 2026 | Direct | |||
| Clifford Stein | DTST | Restricted Stock Unit | Award | 10,000 | 10,000 | 29 Jan 2026 | Direct | |||
| Nancy M. Stallone | DTST | Restricted Stock Unit | Award | 10,000 | 10,000 | 29 Jan 2026 | Direct | |||
| John Argen | DTST | Common Stock | Disposed to Issuer | -100% | -57,207 | 0 | 14 Jan 2026 | Direct | ||
| Harold J. Schwartz | DTST | Common Stock | Disposed to Issuer | -100% | -7,500 | 0 | 14 Jan 2026 | Systems Trading, Inc. | ||
| Harold J. Schwartz | DTST | Common Stock | Disposed to Issuer | -96.9% | -888,376 | 28,471 | 14 Jan 2026 | Direct | ||
| Clifford Stein | DTST | Common Stock | Disposed to Issuer | -100% | -280,850 | 0 | 14 Jan 2026 | Direct | ||
| Lawrence A. Maglione | DTST | Common Stock | Disposed to Issuer | -100% | -24,752 | 0 | 14 Jan 2026 | Direct | ||
| Uwayne A. Mitchell | DTST | Common Stock | Disposed to Issuer | -100% | -11,248 | 0 | 14 Jan 2026 | Direct |
* marks a reported price that did not pass the local price check.