Westport Fuel Systems Inc.
WPRT- Exchange
- Nasdaq
- Industry
- Engines & Turbines
- SEC CIK
- 0001370416
No open-market purchases or sales by Westport Fuel Systems Inc. insiders were filed in the last 90 days; 45 institutions reported holding it in 13F filings for Q2 2026, worth $8.21M in total; no superinvestor holds it.
Holders of 5% or more of WPRT
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Westport Fuel Systems Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Douglas Kevin | 13D/A | 10.50%1.82M shares | – | May 1, 20251 filing | May 1, 2025 | SEC |
| Grace & White Inc | 13G/A | 6.70%1.16M shares | +0.63 ppfrom 6.07% | Feb 5, 20252 filings | Jan 27, 2026 | SEC |
| Cushner Alex Scott | 13G | 6.68%1.14M shares | New | Feb 14, 20251 filing | Feb 14, 2025 | 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
6 Schedule 13D and 13G filings on Westport Fuel Systems Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Feb 6, 20263:04 PM ET | Robert W. Baird & Co. Incand 2 others | 13G/A | 1.00%177.3K shares | −4.30 ppfrom 5.30%Below 5% | Dec 31, 2025 | SEC |
| Jan 27, 20265:17 PM ET | Grace & White Inc | 13G/A | 6.70%1.16M shares | +0.63 ppfrom 6.07% | Dec 31, 2025 | SEC |
| May 1, 20255:33 PM ET | Douglas Kevinand 9 others | 13D/A | 10.50%1.82M shares | – | Apr 30, 2025 | SEC |
| Feb 14, 20253:00 PM ET | Cushner Alex Scott | 13G | 6.68%1.14M shares | New | Dec 31, 2024 | SEC |
| Feb 11, 20255:42 PM ET | Baird Robert W & Co Incand 2 others | 13G | 5.30%916.2K shares | New | Dec 31, 2024 | SEC |
| Feb 5, 20254:58 PM ET | Grace & White Inc | 13G | 6.07%1.05M shares | New | Dec 31, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Westport Fuel Systems Inc. shares.
No Form 144 notices for Westport Fuel Systems Inc. are on file.