Ultralife Corp
ULBI- Exchange
- Nasdaq
- Industry
- Miscellaneous Electrical Machinery, Equipment & Supplies
- SEC CIK
- 0000875657
No open-market purchases or sales by Ultralife Corp insiders were filed in the last 90 days; 52 institutions reported holding it in 13F filings for Q2 2026, worth $33.8M in total; no superinvestor holds it.
Holders of 5% or more of ULBI
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Ultralife Corp, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Whitmore Bradford T | 13D/A | 39.60%6.60M shares | – | Sep 3, 20242 filings | Mar 16, 2026 | SEC |
| Visionary Wealth Advisors | 13G | 6.60%1.09M shares | −1.20 ppfrom 7.80% | Feb 17, 20216 filings | Feb 13, 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
12 Schedule 13D and 13G filings on Ultralife Corp, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Mar 16, 20267:16 PM ET | Whitmore Bradford Tand 3 others | 13D/A | 39.60%6.60M shares | – | Mar 12, 2026 | SEC |
| Feb 13, 20264:50 PM ET | Visionary Wealth Advisors | 13G | 6.60%1.09M shares | −1.20 ppfrom 7.80% | Dec 31, 2025 | SEC |
| Feb 14, 202512:22 PM ET | Visionary Wealth Advisors | 13G | 7.80%1.29M shares | – | Dec 31, 2024 | SEC |
| Sep 3, 2024 | Whitmore Bradford T | 13D/AOld format | – | – | – | SEC |
| Feb 14, 2024 | Visionary Wealth Advisors | 13GOld format | – | – | – | SEC |
| Feb 9, 2024 | Dimensional Fund Advisors LP | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2023 | Visionary Wealth Advisors | 13GOld format | – | – | – | SEC |
| Feb 10, 2023 | Dimensional Fund Advisors LP | 13G/AOld format | – | – | – | SEC |
| Feb 15, 2022 | Visionary Wealth Advisors | 13GOld format | – | – | – | SEC |
| Feb 8, 2022 | Dimensional Fund Advisors LP | 13G/AOld format | – | – | – | SEC |
| Feb 17, 2021 | Visionary Wealth Advisors | 13GOld format | – | New | – | SEC |
| Feb 16, 2021 | Dimensional Fund Advisors LP | 13G/AOld format | – | – | – | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Ultralife Corp shares.
No Form 144 notices for Ultralife Corp are on file.