Tessera Defense & Homeland Security Inc.
HLSQ- Exchange
- NYSE
- Industry
- Services-Prepackaged Software
- SEC CIK
- 0001739174
No open-market purchases or sales by Tessera Defense & Homeland Security Inc. insiders were filed in the last 90 days; 9 institutions reported holding it in 13F filings for Q2 2026, worth $237.3K in total; no superinvestor holds it.
Holders of 5% or more of HLSQ
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Tessera Defense & Homeland Security Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| T3 Defense Inc. | 13D/A | 20.40%1.60M shares | +0.53 ppfrom 19.87% | Apr 10, 20262 filings | Apr 14, 2026 | SEC |
| Yeganeh Reuven | 13D | 19.99%381.4K shares | New | Jan 26, 20261 filing | Jan 26, 2026 | SEC |
| Flynn James E | 13D/A | 9.99%15.6M shares | – | Mar 22, 20244 filings | Mar 3, 2025 | SEC |
| Mandragola Ltd. | 13G | 9.99%553.8K shares | New | Oct 5, 20261 filing | Oct 5, 2026 | SEC |
| Centaurus Investments Ltd | 13G | 7.60%1.97M shares | – | Sep 29, 20233 filings | May 15, 2025 | SEC |
| Nantahala Capital Management, LLC | 13G/A | 7.13%730.6K shares | −2.86 ppfrom 9.99% | Nov 13, 20244 filings | Aug 14, 2026 | SEC |
| Mayers Ventures LLC | 13D/A | 5.30%477.6K shares | +0.44 ppfrom 4.86% | Sep 17, 20262 filings | Oct 6, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
58 Schedule 13D and 13G filings on Tessera Defense & Homeland Security Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Oct 6, 20268:55 AM ET | Mayers Ventures LLCand 1 other | 13D/A | 5.30%477.6K shares | +0.44 ppfrom 4.86% | Sep 30, 2026 | SEC |
| Oct 5, 20265:05 PM ET | Mandragola Ltd.and 1 other | 13G | 9.99%553.8K shares | New | Apr 13, 2026 | SEC |
| Sep 17, 20264:03 PM ET | Mayers Ventures LLCand 1 other | 13D | 4.86%130.0K shares | NewBelow 5% | Sep 16, 2026 | SEC |
| Sep 15, 20264:04 PM ET | T3 Defense Inc.and 3 others | 13D/A | 3.87%156.8K shares | –Below 5% | Sep 15, 2026 | SEC |
| Aug 20, 20265:15 PM ET | Cystic Fibrosis Foundation | 13G/A | 1.50%174.3K shares | −8.49 ppfrom 9.99%Below 5% | Jun 30, 2026 | SEC |
| Aug 14, 20264:37 PM ET | Nantahala Capital Management, LLCand 2 others | 13G/A | 7.13%730.6K shares | −2.86 ppfrom 9.99% | Jun 30, 2026 | SEC |
| Aug 13, 20264:06 PM ET | Centaurus Investments Ltdand 4 others | 13G/A | 0.70%82.6K shares | −4.50 ppfrom 5.20%Below 5% | Jun 30, 2026 | SEC |
| Jun 16, 20267:15 PM ET | Flynn James Eand 5 others | 13D/A | 4.70%533.4K shares | −3.39 ppfrom 8.09%Below 5% | Jun 12, 2026 | SEC |
| May 28, 20266:13 PM ET | Flynn James Eand 5 others | 13D/A | 8.09%889.9K shares | −1.90 ppfrom 9.99% | May 26, 2026 | SEC |
| May 14, 20267:39 PM ET | Centaurus Investments Ltdand 5 others | 13G/A | 5.20%82.6K shares | – | Mar 31, 2026 | SEC |
| Apr 15, 20265:37 PM ET | Flynn James Eand 5 others | 13D/A | 9.99%989.1K shares | 0.00 ppfrom 9.99% | Apr 15, 2026 | SEC |
| Apr 14, 20268:00 AM ET | T3 Defense Inc.and 3 others | 13D/A | 20.40%1.60M shares | +0.53 ppfrom 19.87% | Apr 10, 2026 | SEC |
| Apr 10, 20263:40 PM ET | T3 Defense Inc.and 3 others | 13D | 19.87%1.30M shares | New | Apr 10, 2026 | SEC |
| Feb 17, 20264:47 PM ET | Alyeska Investment Group, L.P.and 2 others | 13G/A | 2.50%38.2K shares | −6.77 ppfrom 9.27%Below 5% | Dec 31, 2025 | SEC |
| Feb 13, 20265:03 PM ET | Nantahala Capital Management, LLCand 2 others | 13G/A | 9.99%156.7K shares | 0.00 ppfrom 9.99% | Dec 31, 2025 | SEC |
| Feb 11, 20267:24 PM ET | Flynn James Eand 5 others | 13D/A | 9.99%989.1K shares | – | Feb 9, 2026 | SEC |
| Jan 29, 20268:33 PM ET | Hirschman Orinand 1 other | 13G/A | 0.10%38.2K shares | −6.20 ppfrom 6.30%Below 5% | Dec 31, 2025 | SEC |
| Jan 26, 20264:05 PM ET | Yeganeh Reuvenand 1 other | 13D | 19.99%381.4K shares | New | Dec 26, 2025 | SEC |
| Aug 7, 20254:15 PM ET | Morgan Stanleyand 1 other | 13G/A | 0.00%0 shares | −7.10 ppfrom 7.10%Below 5% | Jul 31, 2025 | SEC |
| Aug 5, 20253:15 PM ET | Morgan Stanleyand 1 other | 13G | 7.10%1.85M shares | New | Jun 30, 2025 | SEC |
| Jun 23, 20255:08 PM ET | OrbiMed Israel BioFund GP Limited Partnershipand 3 others | 13D/A | 1.00%276.1K shares | –Below 5% | Jun 18, 2025 | SEC |
| May 15, 20254:39 PM ET | Nantahala Capital Management, LLCand 2 others | 13G/A | 9.99%2.49M shares | 0.00 ppfrom 9.99% | Mar 31, 2025 | SEC |
| May 15, 20254:29 PM ET | Alyeska Investment Group, L.P.and 2 others | 13G | 9.27%2.32M shares | New | Mar 31, 2025 | SEC |
| May 15, 20254:05 PM ET | Centaurus Investments Ltdand 5 others | 13G | 7.60%1.97M shares | – | Apr 21, 2025 | SEC |
| May 8, 20257:39 AM ET | Hirschman Orinand 1 other | 13G | 6.30%1.57M shares | New | Mar 31, 2025 | SEC |
| Mar 4, 20255:34 PM ET | Cystic Fibrosis Foundation | 13G/A | 9.99%2.49M shares | −10.00 ppfrom 19.99% | Feb 27, 2025 | SEC |
| Mar 3, 20257:04 PM ET | Flynn James Eand 5 others | 13D/A | 9.99%15.6M shares | – | Feb 27, 2025 | SEC |
| Feb 14, 20254:05 PM ET | Cystic Fibrosis Foundation | 13G/A | 19.99%4.09M shares | – | Sep 30, 2024 | SEC |
| Nov 13, 20245:30 PM ET | Nantahala Capital Management, LLCand 2 others | 13G | 9.99%1.79M shares | New | Sep 30, 2024 | SEC |
| Nov 13, 2024 | AMR Action Fund, L.P. | 13G/AOld format | – | – | – | SEC |
| Nov 4, 2024 | Burbank John Howard III | 13G/AOld format | – | – | – | SEC |
| Oct 28, 2024 | Centaurus Investments Ltd | 13G/AOld format | – | – | – | SEC |
| Jul 17, 2024 | OrbiMed Israel BioFund GP Limited Partnership | 13D/AOld format | – | – | – | SEC |
| Jul 11, 2024 | Flynn James E | 13D/AOld format | – | – | – | SEC |
| May 30, 2024 | Flynn James E | 13D/AOld format | – | – | – | SEC |
| Mar 26, 2024 | Cystic Fibrosis Foundation | 13G/AOld format | – | – | – | SEC |
| Mar 25, 2024 | AMR Action Fund, L.P. | 13GOld format | – | New | – | SEC |
| Mar 22, 2024 | Flynn James E | 13DOld format | – | New | – | SEC |
| Mar 19, 2024 | OrbiMed Israel BioFund GP Limited Partnership | 13D/AOld format | – | – | – | SEC |
| Mar 8, 2024 | OrbiMed Israel BioFund GP Limited Partnership | 13D/AOld format | – | – | – | SEC |
| Feb 13, 2024 | MMCAP International Inc. SPC | 13G/AOld format | – | – | – | SEC |
| Feb 2, 20245:07 PM ET | Johnson & Johnson | 13G/AOld format | – | – | – | SEC |
| Jan 30, 2024 | Cystic Fibrosis Foundation | 13G/AOld format | – | – | – | SEC |
| Sep 29, 2023 | Centaurus Investments Ltd | 13GOld format | – | New | – | SEC |
| Jun 23, 2023 | Burbank John Howard III | 13GOld format | – | New | – | SEC |
| May 8, 2023 | OrbiMed Israel BioFund GP Limited Partnership | 13D/AOld format | – | – | – | SEC |
| Mar 17, 2023 | OrbiMed Israel BioFund GP Limited Partnership | 13D/AOld format | – | – | – | SEC |
| Mar 8, 2023 | Cystic Fibrosis Foundation | 13GOld format | – | New | – | SEC |
| Feb 14, 2023 | MMCAP International Inc. SPC | 13G/AOld format | – | – | – | SEC |
| Feb 13, 2023 | Ugwumba Chidozie | 13G/AOld format | – | – | – | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Tessera Defense & Homeland Security Inc. shares.
No Form 144 notices for Tessera Defense & Homeland Security Inc. are on file.