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Making an investment decision in the stock market involves a certain amount of risk, so it's important to thoroughly review a company's stock before making any decisions. Stock float, number of short positions and outstanding shares are among the many factors an investor should take into account.
Investors cannot turn a blind eye to insiders as well as institutional ownership. They need to follow insider trades to determine the direction the stock is likely to take.
About 0.86% of NNUP shares are held by financial institutions. TOWER BRIDGE ADVISORS is the top corporate investor, holding 661.77K shares valued at $132.35K. A 0.98% stake in Nocopi Technologies, Inc. is owned by the company. BLACKSTON FINANCIAL ADVISORY GROUP, LLC owns 30.5K shares valued at $6.00K, which translates its holding of 0.05% of the stake in the company.
| Date | Holder | % Stake | Shares Held | Total Value ($) | Shares | % Change in Portfolio |
|---|---|---|---|---|---|---|
| Mar 31, 2022 | TOWER BRIDGE ADVISORS | 0.98% | 661.77K | 132.35K | 661.77K | +100.00% |
| Mar 31, 2022 | BLACKSTON FINANCIAL ADVISORY GROUP, LLC | 0.05% | 30.5K | 6K | 0 | 0 |
Among the NNUP insiders holding of 62.12% of the stake in company, LIEBOWITZ MICHAEL, Chief Executive Officer, holds the largest shares of 3.09M. FROST PHILLIP MD ET AL, 10 percent owner, is the second largest NNUP insider with ownership of 1.47M shares. STEINBERG JOSEPH S, 10 percent owner, stands third with possession of 1.45M shares of that stake.
| Insiders | Designation | Shares Held |
|---|---|---|
| LIEBOWITZ MICHAEL | Chief Executive Officer | 3.09M |
| FROST PHILLIP MD ET AL | 10 percent owner | 1.47M |
| STEINBERG JOSEPH S | 10 percent owner | 1.45M |
| FEINSTEIN MICHAEL | Chairman of the Board | 1.32M |
| SOLOMON MICHAEL BARRY | 758.33K | |
| CURTIS WILLIAM PATRICK JR | director | 457.43K |
| WINGER MATTHEW C. | Chief Executive Officer | 251.12K |
| WHITE PHILIP | director | 244.25K |
| WESTENBURG KEVIN CAMERER | President | 200.53K |
| STOVOLD TERRY | Chief Operating Officer | 12K |
| GOLDMAN JACQUELINE JOY | director | 3K |
| SITES ERIC | director | 2.5K |
| GERWITZ HERMAN MARK | director | 0 |
| ERIKSEN HOWARD TIMOTHY | 10 percent owner | 0 |
| Date | Insider | Type | Cost | Shares | Value ($) | Shares Total |
|---|---|---|---|---|---|---|
| Sep 11, 2026 | SITES ERIC | PURCHASE | 1.80 | 500 | 900 | 2.5K |
| Sep 10, 2026 | SITES ERIC | PURCHASE | 1.85 | 1K | 1.85K | 2K |
| Sep 09, 2026 | SITES ERIC | PURCHASE | 1.90 | 1K | 1.9K | 1K |
| Aug 19, 2026 | WINGER MATTHEW C. | PURCHASE | 1.80 | 200 | 360 | 251.12K |
| Aug 18, 2026 | WINGER MATTHEW C. | PURCHASE | 1.71 | 5K | 8.55K | 250.92K |
| Dec 29, 2025 | WESTENBURG KEVIN CAMERER | PURCHASE | 1.50 | 33.33K | 50K | 200.53K |
| Aug 28, 2025 | WESTENBURG KEVIN CAMERER | PURCHASE | 1.65 | 4K | 6.6K | 147.2K |
| Aug 27, 2025 | WESTENBURG KEVIN CAMERER | PURCHASE | 1.63 | 1.5K | 2.45K | 143.2K |
| Aug 26, 2025 | WESTENBURG KEVIN CAMERER | PURCHASE | 1.60 | 5K | 8K | 141.7K |
| Aug 20, 2025 | WESTENBURG KEVIN CAMERER | PURCHASE | 1.60 | 2.5K | 4K | 136.7K |
| Aug 19, 2025 | WESTENBURG KEVIN CAMERER | PURCHASE | 1.60 | 5K | 8K | 134.2K |
| Jun 06, 2025 | FROST PHILLIP MD ET AL | PURCHASE | 1.10 | 195.85K | 215.44K | 1.47M |
| Jun 06, 2025 | STEINBERG JOSEPH S | PURCHASE | 1.10 | 195.85K | 215.44K | 1.45M |
| Jun 06, 2025 | WINGER MATTHEW C. | PURCHASE | 1.10 | 101.42K | 111.56K | 235.92K |
| Jun 28, 2024 | LIEBOWITZ MICHAEL | PURCHASE | 2.94 | 2.5K | 7.35K | 3.09M |
| May 23, 2024 | WINGER MATTHEW C. | PURCHASE | 2.92 | 7.5K | 21.9K | 74.5K |
| Aug 28, 2023 | WINGER MATTHEW C. | PURCHASE | 3.22 | 1K | 3.22K | 67K |
| Aug 25, 2023 | WINGER MATTHEW C. | PURCHASE | 3.24 | 1K | 3.24K | 66K |
| Aug 24, 2023 | WINGER MATTHEW C. | PURCHASE | 3.25 | 3K | 9.75K | 65K |
| Aug 23, 2023 | GOLDMAN JACQUELINE JOY | PURCHASE | 3.10 | 1.5K | 4.65K | 3K |
| Aug 22, 2023 | GOLDMAN JACQUELINE JOY | PURCHASE | 3.08 | 1.5K | 4.62K | 1.5K |
| Aug 21, 2023 | LIEBOWITZ MICHAEL | PURCHASE | 3.08 | 1K | 3.08K | 3.09M |
| Aug 18, 2023 | LIEBOWITZ MICHAEL | PURCHASE | 3.39 | 100 | 339 | 3.08M |
| Sep 13, 2022 | LIEBOWITZ MICHAEL | PURCHASE | 1.40 | 1.25M | 1.75M | 3.08M |
| Jun 09, 2022 | LIEBOWITZ MICHAEL | PURCHASE | 0.17 | 43.18K | 7.34K | 18.33M |
| Jun 08, 2022 | LIEBOWITZ MICHAEL | PURCHASE | 0.16 | 300 | 48 | 18.29M |
| Jun 02, 2022 | LIEBOWITZ MICHAEL | PURCHASE | 0.16 | 65.33K | 10.45K | 18.25M |
| Jun 01, 2022 | LIEBOWITZ MICHAEL | PURCHASE | 0.16 | 200 | 32 | 18.14M |
| May 25, 2022 | LIEBOWITZ MICHAEL | PURCHASE | 0.16 | 445.49K | 72.17K | 18.14M |
| May 23, 2022 | WINGER MATTHEW C. | PURCHASE | 0.15 | 25K | 3.75K | 620K |
| May 23, 2022 | ERIKSEN HOWARD TIMOTHY | SALE | 0.17 | 707.89K | 116.8K | 0 |
| May 23, 2022 | LIEBOWITZ MICHAEL | PURCHASE | 0.17 | 8.55M | 1.44M | 17.51M |
| May 13, 2022 | WINGER MATTHEW C. | PURCHASE | 0.16 | 25K | 4K | 595K |
| May 12, 2022 | LIEBOWITZ MICHAEL | PURCHASE | 0.16 | 72.5K | 11.6K | 8.87M |
| May 11, 2022 | LIEBOWITZ MICHAEL | PURCHASE | 0.16 | 97.27K | 15.56K | 8.79M |
| May 09, 2022 | ERIKSEN HOWARD TIMOTHY | PURCHASE | 0.15 | 68K | 10.2K | 707.89K |
| Apr 28, 2022 | ERIKSEN HOWARD TIMOTHY | PURCHASE | 0.16 | 225K | 35.55K | 7.34M |
| Apr 20, 2022 | ERIKSEN HOWARD TIMOTHY | PURCHASE | 0.15 | 389 | 59.13 | 7.08M |
| Mar 18, 2022 | LIEBOWITZ MICHAEL | PURCHASE | 0.19 | 15.99K | 3.04K | 8.7M |
| Mar 17, 2022 | LIEBOWITZ MICHAEL | PURCHASE | 0.19 | 3K | 570 | 8.68M |
| Mar 17, 2022 | WINGER MATTHEW C. | PURCHASE | 0.19 | 5K | 950 | 570K |
| Mar 16, 2022 | LIEBOWITZ MICHAEL | PURCHASE | 0.19 | 45.35K | 8.62K | 8.68M |
| Mar 11, 2022 | LIEBOWITZ MICHAEL | PURCHASE | 0.19 | 197.38K | 37.5K | 8.63M |
| Mar 11, 2022 | WINGER MATTHEW C. | PURCHASE | 0.19 | 17.62K | 3.35K | 565K |
| Mar 09, 2022 | LIEBOWITZ MICHAEL | PURCHASE | 0.19 | 32.2K | 6.12K | 8.43M |
| Dec 06, 2021 | ERIKSEN HOWARD TIMOTHY | PURCHASE | 0.14 | 380K | 52.44K | 6.7M |
| Dec 03, 2021 | ERIKSEN HOWARD TIMOTHY | PURCHASE | 0.15 | 21K | 3.2K | 6.68M |
| Dec 02, 2021 | ERIKSEN HOWARD TIMOTHY | PURCHASE | 0.16 | 150K | 24K | 6.66M |
| Nov 24, 2021 | ERIKSEN HOWARD TIMOTHY | PURCHASE | 0.17 | 326.3K | 55.47K | 6.51M |
| Aug 13, 2021 | FEINSTEIN MICHAEL | SALE | 0.21 | 50K | 10.75K | 1.32M |
| Jul 23, 2021 | WHITE PHILIP | SALE | 0.20 | 30.3K | 6K | 244.25K |
| Jun 24, 2021 | FEINSTEIN MICHAEL | SALE | 0.20 | 100K | 19.5K | 568.87K |
| Jun 08, 2021 | FEINSTEIN MICHAEL | SALE | 0.19 | 100K | 19K | 668.87K |
| Apr 08, 2021 | FEINSTEIN MICHAEL | SALE | 0.15 | 300K | 45K | 768.87K |
| Mar 03, 2021 | FEINSTEIN MICHAEL | SALE | 0.15 | 30K | 4.59K | 1.07M |
| Nov 15, 2017 | WHITE PHILIP | PURCHASE | 0.04 | 12.5K | 498.75 | 17.5K |
| Oct 30, 2017 | WHITE PHILIP | PURCHASE | 0.04 | 12.5K | 487.5 | 294.25K |
| Oct 25, 2017 | STOVOLD TERRY | PURCHASE | 0.04 | 12K | 478.8 | 12K |
| Oct 07, 2015 | WHITE PHILIP | PURCHASE | 0.03 | 5K | 150 | 5K |
| Sep 28, 2015 | WHITE PHILIP | PURCHASE | 0.02 | 50K | 900 | 281.75K |
| Jul 08, 2014 | GERWITZ HERMAN MARK | PURCHASE | 0.05 | 0 | - | 0 |
| Aug 11, 2010 | GERWITZ HERMAN MARK | PURCHASE | 0.03 | 62.5K | 2K | 72.5K |
| Apr 14, 2010 | WHITE PHILIP | PURCHASE | 0.04 | 148.91K | 6.51K | 221.75K |
| Nov 25, 2009 | FEINSTEIN MICHAEL | PURCHASE | 0.05 | 15K | 750 | 2.28M |
| Nov 19, 2009 | FEINSTEIN MICHAEL | PURCHASE | 0.06 | 8K | 440 | 2.26M |
| Nov 18, 2009 | FEINSTEIN MICHAEL | PURCHASE | 0.06 | 11.6K | 638 | 2.25M |
| Oct 02, 2009 | CURTIS WILLIAM PATRICK JR | PURCHASE | 0.10 | 260.42K | 25K | 457.43K |
| Apr 21, 2009 | GERWITZ HERMAN MARK | PURCHASE | 0.05 | 10K | 500 | 10K |
| Apr 17, 2009 | FEINSTEIN MICHAEL | PURCHASE | 0.04 | 10K | 400 | 2.24M |
| Apr 16, 2009 | FEINSTEIN MICHAEL | PURCHASE | 0.04 | 25K | 1K | 2.23M |
| Apr 09, 2009 | FEINSTEIN MICHAEL | PURCHASE | 0.06 | 25K | 1.5K | 2.21M |
| Mar 12, 2009 | FEINSTEIN MICHAEL | PURCHASE | 0.07 | 10K | 700 | 2.18M |
| Feb 23, 2009 | FEINSTEIN MICHAEL | PURCHASE | 0.09 | 10K | 900 | 2.17M |
| Feb 06, 2009 | WHITE PHILIP | PURCHASE | 0.13 | 5K | 650 | 72.83K |
| Jan 26, 2009 | GERWITZ HERMAN MARK | PURCHASE | 0.08 | 6K | 480 | 6K |
| Jan 22, 2009 | FEINSTEIN MICHAEL | PURCHASE | 0.07 | 10K | 700 | 2.16M |
| Jan 15, 2009 | FEINSTEIN MICHAEL | PURCHASE | 0.08 | 10K | 800 | 2.15M |
| Dec 31, 2008 | FEINSTEIN MICHAEL | PURCHASE | 0.07 | 10K | 700 | 2.14M |
| Dec 08, 2008 | FEINSTEIN MICHAEL | PURCHASE | 0.10 | 5K | 500 | 2.13M |
| Dec 05, 2008 | FEINSTEIN MICHAEL | PURCHASE | 0.10 | 10K | 1K | 2.13M |
| Dec 03, 2008 | FEINSTEIN MICHAEL | PURCHASE | 0.11 | 10K | 1.06K | 2.12M |
| Jul 25, 2008 | WHITE PHILIP | PURCHASE | 0.39 | 10K | 3.9K | 67.83K |
| Jun 20, 2008 | FEINSTEIN MICHAEL | PURCHASE | 0.28 | 16K | 4.48K | 656K |
| Jan 28, 2008 | FEINSTEIN MICHAEL | PURCHASE | 0.47 | 5K | 2.35K | 2.83M |
| May 25, 2007 | WHITE PHILIP | PURCHASE | 10000.00 | 20.83K | 208.33M | 57.83K |
| Aug 27, 2004 | SOLOMON MICHAEL BARRY | PURCHASE | 11875.00 | 33.75K | 400.78M | 758.33K |
| May 17, 2004 | SOLOMON MICHAEL BARRY | PURCHASE | 0.16 | 41.25K | 6.66K | 792.08K |
| Sep 04, 2003 | FEINSTEIN MICHAEL | PURCHASE | 0.08 | 18K | 1.51K | 1.82M |
| Sep 03, 2003 | FEINSTEIN MICHAEL | PURCHASE | 0.08 | 5K | 400 | 1.81M |
| Aug 25, 2003 | FEINSTEIN MICHAEL | PURCHASE | 0.12 | 15K | 1.74K | 1.8M |
| Aug 22, 2003 | FEINSTEIN MICHAEL | PURCHASE | 0.08 | 16K | 1.28K | 1.79M |
| Aug 21, 2003 | FEINSTEIN MICHAEL | PURCHASE | 0.09 | 15K | 1.28K | 1.77M |
| Aug 05, 2003 | FEINSTEIN MICHAEL | PURCHASE | 0.06 | 20K | 1.1K | 1.75M |
| Jul 19, 2003 | FEINSTEIN MICHAEL | PURCHASE | 0.05 | 50K | 2.4K | 1.73M |
| Jul 14, 2003 | FEINSTEIN MICHAEL | PURCHASE | 0.05 | 20K | 1.02K | 1.68M |
| Jul 07, 2003 | FEINSTEIN MICHAEL | PURCHASE | 0.05 | 30K | 1.47K | 1.66M |
| Jul 03, 2003 | FEINSTEIN MICHAEL | PURCHASE | 0.05 | 20K | 960 | 1.63M |
| Jun 26, 2003 | FEINSTEIN MICHAEL | PURCHASE | 0.05 | 20K | 1.02K | 1.61M |
| Jun 25, 2003 | FEINSTEIN MICHAEL | PURCHASE | 0.05 | 18K | 900 | 1.59M |
| Jun 19, 2003 | FEINSTEIN MICHAEL | PURCHASE | 0.05 | 12K | 624 | 1.58M |