As of November 6, 2026, 2 holders' latest Schedule 13D or 13G filings report owning 5% or more of North American Construction Group Ltd. The largest reported stake is Cannell Capital LLC's, at 5.1%. 9 filings are on record since August 14, 2025 (Schedule 13G, August 14, 2025).
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Key facts
- · Reporting person: Bank of Montreal · Sole voting: 1,419,508 · Shared voting: 6,100 · Sole dispositive: 1,420,258 · Shared dispositive: 6,100 · SCHEDULE 13G/A, 2026-08-12
- · Reporting person: CIBC Global Asset Managment Inc. · Sole voting: 1,354,606 · Shared voting: 0 · Sole dispositive: 1,354,606 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-08-03
- · Reporting person: Mawer Investment Management Ltd. · Sole voting: 972,806 · Shared voting: 0 · Sole dispositive: 972,806 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-05-12
- · Holder: CIBC Global Asset Managment Inc. · Percent: 5.13% · SCHEDULE 13G
- · Holder: Polar Asset Management Partners Inc. · Percent: 4.6% · SCHEDULE 13G/A
North American Construction Group Ltd. has 9 Schedule 13D or 13G filings on record since 2025-08-14. 2 holders' latest filing reports 5% or more of common shares. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Cannell Capital LLC | 5.1% | 1,547,321 | SCHEDULE 13G, 2025-08-14 | 2025-06-30 |
| Bank of Montreal | 5.05% | 1,426,358 | SCHEDULE 13G/A, 2026-08-12 | 2026-06-30 |
| CIBC Global Asset Managment Inc. | 4.84% | 1,354,606 | SCHEDULE 13G/A, 2026-08-03 | 2026-06-30 |
| Polar Asset Management Partners Inc. | 4.6% | 1,384,290 | SCHEDULE 13G/A, 2026-02-17 | 2025-12-31 |
| Mawer Investment Management Ltd. | 3.41% | 972,806 | SCHEDULE 13G/A, 2026-05-12 | 2026-03-31 |
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More on North American Construction Group Ltd. and the records around it.
North American Construction Group Ltd. elsewhere on the record
Companies that share a holder
- CIBC Global Asset Managment Inc. also filed stake reports on 2 other companies: ISHARES TR (May 2026), Granite Real Estate Investment Trust (Aug 2025)
- Mawer Investment Management Ltd. also filed stake reports on 10 other companies: Barrett Business Services Inc (Aug 2026), OSI SYSTEMS INC (Feb 2026), Warner Music Group Corp. (Nov 2025)
- Bank of Montreal also filed stake reports on 49 other companies: Akari Therapeutics Plc (Aug 2026), Alarm.com Holdings, Inc. (Aug 2026), OPENLANE, Inc. (Aug 2026)
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| Bank of Montreal | 1,419,508 | 6,100 | 1,420,258 | 6,100 | SCHEDULE 13G/A, 2026-08-12 |
| Bank Of Montreal Holding Inc. | 1,419,508 | 6,100 | 1,420,258 | 6,100 | SCHEDULE 13G/A, 2026-08-12 |
| Bmo Nesbitt Burns Inc. | 1,419,508 | 6,100 | 1,420,258 | 6,100 | SCHEDULE 13G/A, 2026-08-12 |
| Bmo Asset Management Inc. | 1,413,984 | 0 | 1,413,984 | 0 | SCHEDULE 13G/A, 2026-08-12 |
| CIBC Global Asset Managment Inc. | 1,354,606 | 0 | 1,354,606 | 0 | SCHEDULE 13G/A, 2026-08-03 |
| Mawer Investment Management Ltd. | 972,806 | 0 | 972,806 | 0 | SCHEDULE 13G/A, 2026-05-12 |
The latest filing identifies North American Construction Group Ltd. by CUSIP 656811106 and gives its principal executive office as 27287 100 AVENUE, ACHESON (SCHEDULE 13G/A, 2026-08-12).
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-08-14 | Cannell Capital LLC | 5.1% | SCHEDULE 13G |
| 2025-12-05 | Polar Asset Management Partners Inc. | 5.3% | SCHEDULE 13G/A |
| 2026-01-08 | Bank of Montreal | 9.76% | SCHEDULE 13G/A |
| 2026-02-11 | Mawer Investment Management Ltd. | 7.01% | SCHEDULE 13G/A |
| 2026-02-17 | Polar Asset Management Partners Inc. | 4.6% | SCHEDULE 13G/A |
| 2026-05-12 | Mawer Investment Management Ltd. | 3.41% | SCHEDULE 13G/A |
| 2026-05-12 | CIBC Global Asset Managment Inc. | 5.13% | SCHEDULE 13G |
| 2026-08-03 | CIBC Global Asset Managment Inc. | 4.84% | SCHEDULE 13G/A |
| 2026-08-12 | Bank of Montreal | 5.05% | SCHEDULE 13G/A |
Questions about who owns North American Construction Group Ltd.
Who owns North American Construction Group Ltd.?
On this page, 2 holders' latest ownership filings report 5% or more of North American Construction Group Ltd.: Cannell Capital LLC (5.1%, Schedule 13G, filed 2025-08-14) and Bank of Montreal (5.05%, Schedule 13G/A, filed 2026-08-12).
Who are the largest shareholders of North American Construction Group Ltd.?
By the share each holder's latest filing reports, the largest holders of North American Construction Group Ltd. on this page are Cannell Capital LLC (5.1%) and Bank of Montreal (5.05%).
When did Cannell Capital LLC buy into North American Construction Group Ltd.?
The filings give report dates, not purchase dates. The earliest filing from Cannell Capital LLC on this page is the Schedule 13G, filed 2025-08-14, reporting 5.1%.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 9 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.