Quick Takeaways
- NTIP - NETWORK-1 TECHNOLOGIES, INC. has 8 insiders with reported activity on this page.
- No net insider buy/sell flow is currently reported for the last year.
- Recent transaction rows are available for direct filing-level review.
Insider Transactions Reported by 8 Insiders of NETWORK-1 TECHNOLOGIES, INC.
- Symbol
- NTIP on NYSE
- Location
- New Canaan, CT
What Changed
- No meaningful buy/sell imbalance is currently visible in the one-year window.
- Activity will update as new Forms 3/4/5 are filed.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Source Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsInsider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 07 May 2025.
Buys
$0
Shares: 0
Insiders: 0
Sells
$0
Shares: 0
Insiders: 0
Net
$0
Shares: 0
Insiders: 0
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
NETWORK-1 TECHNOLOGIES, INC. executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Corey M. Horowitz | CEO and Chairman, Director, 10%+ Owner | $15,734,183 | Mixed | 22 Mar 2024 | ||
| Steven D. Heinemann | 10%+ Owner | $8,294,019 | Mixed | 27 Jul 2021 | ||
| Niv Harizman | Director | $440,988 | Mixed | 27 Feb 2026 | ||
| Emanuel R. Pearlman | Director | $310,981 | Mixed | 23 Feb 2024 | ||
| David C. Kahn | Chief Financial Officer, Director | $262,994 | Mixed | 29 Dec 2021 | ||
| Jonathan M. Greene | Executive VP & Secretary, Director | $215,474 | Mixed | 18 Feb 2026 | ||
| Allison C. Hoffman | Director | $172,413 | Mixed | 27 Feb 2026 | ||
| Robert Michael Mahan | Chief Financial Officer | $159,868 | Mixed | 18 Feb 2026 |
Top shareholders of NETWORK-1 TECHNOLOGIES, INC. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| Corey M. Horowitz |
3/4/5
|
CEO and Chairman, Director, 10%+ Owner |
—
mixed-class rows
|
7,222,337
mixed-class rows
|
$15,734,183 | — | 22 Mar 2024 | |
| Steven D. Heinemann |
3/4/5
13D/G
|
10%+ Owner |
5.9%
from 13D/G
|
2,307,291
|
$8,294,019 | — | 27 Jul 2021 | |
| CANNELL CAPITAL LLC |
13D/G
13F
|
Company |
5%
|
1,141,975
|
$1,507,407 | $0 | 31 Dec 2025 | |
| Clayton Partners LLC |
13D/G
13F
|
Company |
4.5%
|
1,018,627
|
$1,344,588 | -$256,777 | 31 Dec 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
2.6%
|
585,401
|
$766,876 | — | 31 Dec 2025 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
2%
|
467,844
|
$612,876 | — | 31 Dec 2025 | |
| Niv Harizman |
3/4/5
|
Director |
1.5%
|
347,235
|
$440,988 | — | 27 Feb 2026 | |
| SAYBROOK CAPITAL /NC |
13F
|
Company |
1.4%
|
330,043
|
$432,356 | — | 31 Dec 2025 | |
| PNC FINANCIAL SERVICES GROUP, INC. |
13F
|
Company |
1.2%
|
270,000
|
$353,700 | — | 31 Dec 2025 | |
| Emanuel R. Pearlman |
3/4/5
|
Director |
—
class O/S missing
|
143,309
|
$310,981 | — | 23 Feb 2024 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
1%
|
236,037
|
$309,208 | — | 31 Dec 2025 | |
| David C. Kahn |
3/4/5
|
Chief Financial Officer, Director |
—
mixed-class rows
|
119,803
mixed-class rows
|
$262,994 | — | 29 Dec 2021 | |
| Jonathan M. Greene |
3/4/5
|
Executive VP & Secretary, Director |
—
mixed-class rows
|
163,619
mixed-class rows
|
$215,474 | — | 18 Feb 2026 | |
| Allison C. Hoffman |
3/4/5
|
Director |
0.59%
|
135,759
|
$172,413 | — | 27 Feb 2026 | |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC |
13F
|
Company |
0.57%
|
129,161
|
$169,201 | — | 31 Dec 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
0.56%
|
128,390
|
$168,241 | — | 31 Dec 2025 | |
| Robert Michael Mahan |
3/4/5
|
Chief Financial Officer |
—
mixed-class rows
|
100,000
mixed-class rows
|
$159,868 | — | 18 Feb 2026 | |
| Empowered Funds, LLC |
13F
|
Company |
0.43%
|
97,572
|
$127,819 | — | 31 Dec 2025 | |
| Canton Hathaway, LLC |
13F
|
Company |
0.3%
|
68,291
|
$89,461 | — | 31 Dec 2025 | |
| STATE STREET CORP |
13F
|
Company |
0.2%
|
46,299
|
$60,652 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.18%
|
39,982
|
$52,376 | — | 31 Dec 2025 | |
| Calydon Capital |
13F
|
Company |
0.16%
|
36,204
|
$47,427 | — | 31 Dec 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.14%
|
32,287
|
$42,296 | — | 31 Dec 2025 | |
| Savvy Advisors, Inc. |
13F
|
Company |
0.07%
|
16,000
|
$20,960 | — | 31 Dec 2025 | |
| NATIONAL BANK OF CANADA /FI/ |
13F
|
Company |
0.02%
|
4,000
|
$5,200 | — | 31 Dec 2025 | |
| Tower Research Capital LLC (TRC) |
13F
|
Company |
0.01%
|
2,744
|
$3,595 | — | 31 Dec 2025 | |
| ROYAL BANK OF CANADA |
13F
|
Company |
0%
|
786
|
$1,000 | — | 31 Dec 2025 | |
| OSAIC HOLDINGS, INC. |
13F
|
Company |
0%
|
642
|
$841 | — | 31 Dec 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0%
|
173
|
$226 | — | 31 Dec 2025 | |
| MAI Capital Management |
13F
|
Company |
0%
|
102
|
$134 | — | 31 Dec 2025 | |
| SBI Securities Co., Ltd. |
13F
|
Company |
0%
|
4
|
$5 | — | 31 Dec 2025 | |
| MORGAN STANLEY |
13F
|
Company |
0%
|
2
|
$3 | — | 31 Dec 2025 | |
| UBS Group AG |
13F
|
Company |
0%
|
1
|
$1 | — | 31 Dec 2025 |
Recent Insider Transactions by Companies or Individuals for NETWORK-1 TECHNOLOGIES, INC.
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Niv Harizman | NTIP- | Common Stock, $.01 par value per share | Award | 4.51% | 15,000 | 347,235 | 27 Feb 2026 | Direct | ||
| Allison C. Hoffman | NTIP- | Common Stock, $.01 par value per share | Award | 12.4% | 15,000 | 135,759 | 27 Feb 2026 | Direct | ||
| Robert Michael Mahan | NTIP- | Restricted Stock Units | Award | 42.9% | 15,000 | 50,000 | 18 Feb 2026 | Direct | ||
| Jonathan M. Greene | NTIP- | Restricted Stock Units | Award | 200% | 25,000 | 37,500 | 18 Feb 2026 | Direct | ||
| Jonathan M. Greene | NTIP | Common Stock, $.01 par value per share | Tax liability | -2.08% | -2,674 | 126,119 | 08 Jan 2026 | Direct | ||
| Jonathan M. Greene | NTIP | Common Stock, $.01 par value per share | Award | 6.18% | 7,500 | 128,793 | 08 Jan 2026 | Direct | ||
| Jonathan M. Greene | NTIP | Restricted Stock Units | Options Exercise | -37.5% | -7,500 | 12,500 | 08 Jan 2026 | Direct | ||
| Jonathan M. Greene | NTIP | Common Stock, $.01 par value per share | Tax liability | -3.54% | -4,456 | 121,293 | 02 Jan 2026 | Direct | ||
| Jonathan M. Greene | NTIP | Common Stock, $.01 par value per share | Award | 11% | 12,500 | 125,749 | 02 Jan 2026 | Direct | ||
| Jonathan M. Greene | NTIP | Restricted Stock Units | Options Exercise | -38.5% | -12,500 | 20,000 | 02 Jan 2026 | Direct | ||
| Robert Michael Mahan | NTIP | Restricted Stock Units | Award | -50% | -35,000 | 35,000 | 22 Sep 2025 | Direct | ||
| Robert Michael Mahan | NTIP | Common Stock, $.01 par value per share | Award | 100% | 25,000 | 50,000 | 08 Sep 2025 | Direct | ||
| Robert Michael Mahan | NTIP | Restricted Stock Units | Options Exercise | -100% | -25,000 | 0 | 08 Sep 2025 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.