Northwest Natural Gas Co
Ownership
Ownership Structure
Who owns Northwest Natural Gas Co (NWN)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 99.4% of the shares are freely tradable; institutional investors hold 81.7%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 15.16 | 6,383,093 | -6.3 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 6.24 | 2,628,040 | +0.0 | 03/31/2026 |
| Vanguard Capital Management, LLC | 4.35 | 1,832,517 | +0.0 | 03/31/2026 |
| State Street Corp | 3.81 | 1,605,211 | -22.5 | 03/31/2026 |
| Vaughan Nelson Scarbrgh & Mccullough LP | 3.47 | 1,459,852 | +22.8 | 06/30/2026 |
| Geode Capital Management, LLC | 2.45 | 1,032,239 | +4.3 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 6.09 | 2,562,176 | -0.2 | 08/31/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 3.22 | 1,355,569 | +0.8 | 07/31/2026 |
| iShares Russell 2000 ETF | 2.62 | 1,102,476 | -0.6 | 08/31/2026 |
| Vanguard Small Cap Index | 2.30 | 967,183 | +0.2 | 07/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Anderson David Hugo | Director | 50,759 | 2,471,963 $ | Aug 18, 2026 | direct |
| Wilson Brody J | VP, Treas, Controller & CAO | 13,606 | 662,612 $ | Sep 1, 2026 | direct |
| McDonough Sandra | Director | 11,217 | 546,261 $ | Aug 6, 2026 | indirect |
| Kaszuba Raymond J III | SVP & Chief Financial Officer | 7,234 | 352,296 $ | Sep 1, 2026 | direct |
| Ludford Mary E | Director | 4,924 | 239,780 $ | Aug 6, 2026 | indirect |
| Bragdon Peter J | Director | 4,655 | 226,710 $ | Aug 6, 2026 | indirect |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 1, 2026 | Kaszuba Raymond J III | SVP & Chief Financial Officer | Other | 705 | 49.07 | 34,594 |
| Sep 1, 2026 | Wilson Brody J | VP, Treas, Controller & CAO | Other | 341 | 49.07 | 16,733 |
| Aug 18, 2026 | Anderson David Hugo | Director | Sell | 1,500 | 50.86 | 76,294 |
| Aug 6, 2026 | McDonough Sandra | Director | Other | 248 | 50.77 | 12,591 |
| Aug 6, 2026 | Bragdon Peter J | Director | Other | 1,141 | 50.77 | 57,929 |
| Aug 6, 2026 | Ludford Mary E | Director | Other | 507 | 50.77 | 25,740 |
| Jul 20, 2026 | Anderson David Hugo | Director | Sell | 1,500 | 51.18 | 76,775 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.