WPRTNasdaqEngines & TurbinesFiscal year ends December 31
WESTPORT FUEL SYSTEMS INC.
Financials through Q4 FY2025, quarter ended Dec 31, 2025Last filing: 20-F on Apr 23, 2026
$1.84+0.04 (+2.22%)
Close on Oct 19, 2026
- Market cap
- $31.95M
- P/E (TTM)
- –
- Dividend yield
- –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
21.0%
4M of 17M shares
Institutional holders
43
6 new, 4 sold out
Net institutional buying
2M
In Q2 2026
Insider trades, 12 months
0 buys · 0 sales
Open-market trades only
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| Baird Robert W & Co Inc /Wi/ | 916,168 | 5.30% | 13G (passive) | Dec 31, 2024 |
| CVI Investments, Inc. | 1,930,712 | 9.90% | 13G (passive) | Jun 22, 2026 |
| Kevin Douglas | 1,816,689 | 10.50% | 13D (active) amendment | Apr 30, 2025 |
| Grace & White, Inc. | 1,163,087 | 6.70% | 13G (passive) amendment | Dec 31, 2025 |
| Alex Cushner | 1,144,506 | 6.68% | 13G (passive) | Dec 31, 2024 |
| Royce & Associates LP | 1,131,479 | 5.09% | 13G (passive) | Jun 30, 2026 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of WPRT | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| Heights Capital Management, Inc | 1,325,121 | 7.63% | $2.99M | New | 0.69% |
| Royce & Associates LP | 1,131,479 | 6.51% | $2.56M | +639,577 | 0.02% |
| Grace & White Inc /Ny | 714,106 | 4.11% | $1.61M | −292,602 | 0.26% |
| Baird Financial Group, Inc. | 140,024 | 0.81% | $316.45K | −23,874 | 0.00% |
| Citadel Advisors LLC | 89,959 | 0.52% | $203.31K | −64,946 | 0.00% |
| US Bancorp \de\ | 73,108 | 0.42% | $165.22K | −93,721 | 0.00% |
| Goldman Sachs Group Inc | 31,647 | 0.18% | $71.52K | −6,598 | 0.00% |
| Cambridge Investment Research Advisors, Inc. | 23,462 | 0.14% | $54 | +11,681 | 0.00% |
| UBS Group AG | 19,316 | 0.11% | $43.65K | +2,898 | 0.00% |
| TD Waterhouse Canada Inc. | 18,114 | 0.10% | $38.27K | – | 0.00% |
| Susquehanna International Group, Llp | 18,017 | 0.10% | $40.72K | New | 0.00% |
| Jane Street Group, LLC | 13,933 | 0.08% | $31.49K | −1,260 | 0.00% |
| Hrt Financial LP | 13,318 | 0.08% | $30 | New | 0.00% |
| LPL Financial LLC | 11,280 | 0.06% | $25.49K | +1,254 | 0.00% |
| Royal Bank of Canada | 5,978 | 0.03% | $13.00K | −1,880 | 0.00% |
| Morgan Stanley | 3,773 | 0.02% | $8.53K | −288 | 0.00% |
| Tower Research Capital LLC (TRC) | 2,585 | 0.01% | $5.84K | −1,100 | 0.00% |
| Group One Trading, L.P. | 1,997 | 0.01% | $4.51K | +1,100 | 0.00% |
| Wells Fargo & Company/Mn | 1,736 | 0.01% | $3.87K | +295 | 0.00% |
| Simplex Trading, LLC | 1,604 | 0.01% | $3.63K | New | 0.00% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 43 | 4M | 21.0% | 6 / 7 | 12 / 4 | 2M | 1M |
| Q1 2026 | 42 | 2M | 12.3% | 6 / 7 | 9 / 10 | 0M | 0M |
| Q4 2025 | 48 | 2M | 11.5% | 11 / 7 | 10 / 3 | 0M | 1M |
| Q3 2025 | 42 | 2M | 12.9% | 4 / 8 | 9 / 7 | 0M | 0M |
| Q2 2025 | 45 | 2M | 13.7% | 3 / 9 | 11 / 6 | 0M | 0M |
| Q1 2025 | 48 | 3M | 14.7% | 5 / 8 | 9 / 8 | 0M | 0M |
| Q4 2024 | 51 | 3M | 15.5% | 13 / 13 | 6 / 9 | 1M | 0M |
| Q3 2024 | 47 | 2M | 11.5% | 5 / 10 | 9 / 3 | 0M | 0M |
| Q2 2024 | 46 | 2M | 9.7% | 7 / 8 | 8 / 10 | 0M | 0M |
| Q1 2024 | 49 | 2M | 9.4% | 7 / 8 | 11 / 7 | 0M | 0M |
| Q4 2023 | 50 | 1M | 8.5% | 7 / 41 | 1 / 5 | 1M | 0M |
| Q3 2023 | 49 | 0M | 0.8% | 5 / 8 | 10 / 11 | 0M | 0M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
| Fund | Shares | % of WPRT | Value | % of fund | As of |
|---|---|---|---|---|---|
| Royce Micro-Cap Fund | 312,193 | 1.80% | $705.56K | 0.16% | Jun 30, 2026 |
| Royce Capital Fund - Micro-Cap Portfolio | 102,992 | 0.59% | $232.76K | 0.17% | Jun 30, 2026 |
| Fidelity Nasdaq Composite Index Fund | 7,639 | 0.04% | $15.20K | 0.00% | May 31, 2026 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Kevin Douglas 10% owner | Jul 19, 2017 | Award | +150,000 | $1.50 | $225.00K | 150,000 |
| Family Trust Douglas 10% owner | Jul 19, 2017 | Award | +600,000 | $1.50 | $900.00K | 6,829,808 |
| Family Trust Douglas 10% owner | Jul 19, 2017 | Award | +150,000 | $1.50 | $225.00K | 150,000 |
| Family Trust Douglas 10% owner | Jul 19, 2017 | Award | +150,000 | $1.50 | $225.00K | 150,000 |
| Family Trust Douglas 10% owner | Jul 19, 2017 | Award | +150,000 | $1.50 | $225.00K | 150,000 |
| Family Trust Douglas 10% owner | Jul 19, 2017 | Award | +600,000 | $1.50 | $900.00K | 6,360,206 |
| Family Trust Douglas 10% owner | Jul 19, 2017 | Award | +200,000 | $1.50 | $300.00K | 1,915,790 |
| James E. Douglas Iii 10% owner | Jun 1, 2016 | Award | +2,232,300 | – | – | 5,760,206 |
| James E. Douglas Iii 10% owner | Jun 1, 2016 | Award | +1,111,717 | – | – | 2,953,602 |
| James E. Douglas Iii 10% owner | Jun 1, 2016 | Award | +653,944 | – | – | 1,715,790 |
| James E. Douglas Iii 10% owner | Jun 1, 2016 | Award | +2,615,788 | – | – | 6,229,808 |
| Family Trust Douglas 10% owner | May 11, 2015 | Buy | +25,617 | $6.02 | $154.21K | 1,841,885 |
| Family Trust Douglas 10% owner | May 11, 2015 | Buy | +49,727 | $6.02 | $299.36K | 3,527,906 |
| Family Trust Douglas 10% owner | May 11, 2015 | Buy | +60,275 | $6.02 | $362.86K | 3,614,020 |
| Family Trust Douglas 10% owner | May 11, 2015 | Buy | +15,068 | $6.02 | $90.71K | 1,061,846 |
| Family Trust Douglas 10% owner | May 8, 2015 | Buy | +16,883 | $5.69 | $96.06K | 1,816,268 |
| Family Trust Douglas 10% owner | May 8, 2015 | Buy | +32,773 | $5.69 | $186.48K | 3,478,179 |
| Family Trust Douglas 10% owner | May 8, 2015 | Buy | +39,725 | $5.69 | $226.04K | 3,553,745 |
| Family Trust Douglas 10% owner | May 8, 2015 | Buy | +9,932 | $5.69 | $56.51K | 1,046,778 |
| Family Trust Douglas 10% owner | Feb 6, 2013 | Gift | −285,703 | – | – | 0 |
| Family Trust Douglas 10% owner | Feb 6, 2013 | Gift | −285,703 | – | – | 0 |
| & Jean Douglas Irrevocable Descendants Trust James 10% owner | Dec 31, 2012 | Gift | −52,902 | – | – | 2,934,650 |
| & Jean Douglas Irrevocable Descendants Trust James 10% owner | Dec 31, 2012 | Gift | −52,902 | – | – | 2,881,748 |
| Kevin Douglas 10% owner | Jul 30, 2012 | Buy | +17,000 | $38.38 | $652.46K | 1,799,385 |
| Kevin Douglas 10% owner | Jul 30, 2012 | Buy | +33,000 | $38.38 | $1.27M | 3,445,406 |
| Kevin Douglas 10% owner | Jul 30, 2012 | Buy | +40,000 | $38.38 | $1.54M | 2,987,552 |
| Kevin Douglas 10% owner | Jul 30, 2012 | Buy | +10,000 | $38.38 | $383.80K | 1,036,846 |
| Kevin Douglas 10% owner | Jul 27, 2012 | Buy | +10,000 | $38.57 | $385.70K | 1,026,846 |
| Kevin Douglas 10% owner | Jul 27, 2012 | Buy | +17,000 | $38.57 | $655.69K | 1,782,385 |
| Kevin Douglas 10% owner | Jul 27, 2012 | Buy | +33,000 | $38.57 | $1.27M | 3,412,406 |
| Kevin Douglas 10% owner | Jul 27, 2012 | Buy | +40,000 | $38.57 | $1.54M | 2,947,552 |
| & Jean Douglas Irrevocable Descendants Trust James 10% owner | Jul 23, 2012 | Buy | +47,190 | $38.23 | $1.80M | 3,379,406 |
| & Jean Douglas Irrevocable Descendants Trust James 10% owner | Jul 23, 2012 | Buy | +57,200 | $38.23 | $2.19M | 2,907,552 |
| & Jean Douglas Irrevocable Descendants Trust James 10% owner | Jul 23, 2012 | Buy | +24,310 | $38.23 | $929.37K | 1,765,385 |
| & Jean Douglas Irrevocable Descendants Trust James 10% owner | Jul 23, 2012 | Buy | +14,300 | $38.23 | $546.69K | 1,016,846 |
| 2010 Annuity Trust V. KGD 10% owner | Jul 20, 2012 | Buy | +40,000 | $37.12 | $1.48M | 2,850,352 |
| 2010 Annuity Trust V. KGD 10% owner | Jul 20, 2012 | Buy | +33,000 | $37.12 | $1.22M | 3,332,216 |
| 2010 Annuity Trust V. KGD 10% owner | Jul 20, 2012 | Buy | +17,000 | $37.12 | $631.04K | 1,741,075 |
| 2010 Annuity Trust V. KGD 10% owner | Jul 20, 2012 | Buy | +10,000 | $37.12 | $371.20K | 1,002,546 |
| 2010 Annuity Trust V. KGD 10% owner | Jul 19, 2012 | Buy | +28,441 | $37.02 | $1.05M | 1,724,075 |
| 2010 Annuity Trust V. KGD 10% owner | Jul 19, 2012 | Buy | +16,730 | $37.02 | $619.34K | 992,546 |
| 2010 Annuity Trust V. KGD 10% owner | Jul 19, 2012 | Buy | +55,209 | $37.02 | $2.04M | 3,299,216 |
| 2010 Annuity Trust V. KGD 10% owner | Jul 19, 2012 | Buy | +66,920 | $37.02 | $2.48M | 2,810,352 |
| 2010 Annuity Trust V. KGD 10% owner | Jul 18, 2012 | Buy | +3,270 | $35.82 | $117.13K | 975,816 |
| 2010 Annuity Trust V. KGD 10% owner | Jul 18, 2012 | Buy | +5,559 | $35.82 | $199.12K | 1,695,634 |
| 2010 Annuity Trust V. KGD 10% owner | Jul 18, 2012 | Buy | +10,791 | $35.82 | $386.53K | 3,244,007 |
| 2010 Annuity Trust V. KGD 10% owner | Jul 18, 2012 | Buy | +13,080 | $35.82 | $468.53K | 2,743,432 |
| 2010 Annuity Trust V. MMD 10% owner | Jul 11, 2012 | Buy | +40,000 | $33.84 | $1.35M | 2,730,352 |
| 2010 Annuity Trust V. MMD 10% owner | Jul 11, 2012 | Buy | +33,000 | $33.84 | $1.12M | 3,233,216 |
| 2010 Annuity Trust V. MMD 10% owner | Jul 11, 2012 | Buy | +17,000 | $33.84 | $575.28K | 1,690,075 |
| 2010 Annuity Trust V. MMD 10% owner | Jul 11, 2012 | Buy | +10,000 | $33.84 | $338.40K | 972,546 |
| 2010 Annuity Trust V. MMD 10% owner | Jul 10, 2012 | Buy | +33,000 | $36.28 | $1.20M | 3,200,216 |
| 2010 Annuity Trust V. MMD 10% owner | Jul 10, 2012 | Buy | +17,000 | $36.28 | $616.76K | 1,673,075 |
| 2010 Annuity Trust V. MMD 10% owner | Jul 10, 2012 | Buy | +10,000 | $36.28 | $362.80K | 962,546 |
| 2010 Annuity Trust V. MMD 10% owner | Jul 10, 2012 | Buy | +40,000 | $36.28 | $1.45M | 2,690,352 |
| 2010 Annuity Trust V. KGD 10% owner | Jul 6, 2012 | Buy | +26,560 | $36.62 | $972.63K | 2,650,352 |
| 2010 Annuity Trust V. KGD 10% owner | Jul 6, 2012 | Buy | +6,640 | $36.62 | $243.16K | 952,546 |
| 2010 Annuity Trust V. KGD 10% owner | Jul 6, 2012 | Buy | +11,288 | $36.62 | $413.37K | 1,656,075 |
| 2010 Annuity Trust V. KGD 10% owner | Jul 6, 2012 | Buy | +21,912 | $36.62 | $802.42K | 3,167,216 |
| 2010 Annuity Trust V. KGD 10% owner | Jul 5, 2012 | Buy | +3,360 | $37.49 | $125.97K | 945,906 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| William E. Larkin Officer | Sep 16, 2025 | 35,170 | $83.35K | Sep 16, 2025 | Purchase |