What SEC filings does Northwest Natural Holding Company submit to the SEC?

Northwest Natural Holding Company (NWN) submits several types of SEC filings including Form 4 (insider transactions), Form 144 (proposed insider sales), 8-K reports (material events such as earnings releases, acquisitions, leadership changes), and periodic reports — the 10-Q (quarterly) and 10-K (annual). All filings are publicly available through SEC EDGAR.

What does a Form 4 filing tell me about NWN?

A Form 4 for NWN discloses a transaction by a company insider — typically a director, officer, or 10%+ shareholder. It shows the source-reported date, number of shares, price, and updated ownership. These facts do not establish motive or predict future returns.

How do I interpret an 8-K filing from Northwest Natural Holding Company?

An 8-K signals a material event requiring prompt disclosure. Common triggers include earnings pre-announcements, acquisitions, leadership appointments or departures, credit changes, or regulatory actions. Read the item codes inside the filing to understand exactly what was disclosed before drawing conclusions.

What is the difference between a 10-K and 10-Q for NWN?

The 10-K is Northwest Natural Holding Company's annual report with fully audited financial statements, comprehensive MD&A, and complete risk factor disclosures — filed 60–90 days after fiscal year-end. The 10-Q is a lighter quarterly report with unaudited financials filed for the first three quarters. Together they provide a continuous financial picture of the company.

Where can I see all NWN SEC filings directly on EDGAR?

You can view all historical Northwest Natural Holding Company filings on the SEC EDGAR company page for NWN. Each filing card on this page links directly to the original SEC document.

How often does Northwest Natural Holding Company file with the SEC?

Northwest Natural Holding Company files one 10-K per year and up to three 10-Qs per year. Form 4 insider transactions must be reported within two business days of each trade, so the frequency depends on how often insiders are buying or selling NWN shares. 8-K filings occur whenever a material event happens — which can be several times per quarter for an active company.

NWN SEC Filing News — Northwest Natural Holding Company

Latest SEC filings for Northwest Natural Holding Company (NWN) explained in plain English. Covers insider buying and selling (Form 4), proposed insider sales (Form 144), material company events (8-K), and quarterly & annual reports (10-Q / 10-K). StrongBuyAnalytics provides navigation and brief excerpts or summaries; original filings remain at the SEC/source links and were authored by their filers, not StrongBuyAnalytics. Filing dates shown are source dates. Coverage and detection can be delayed or incomplete because of SEC availability, amendments, parsing, caching, or outages. Latest source filing date shown: 2026-10-02.

Northwest Natural Holding Company, through its subsidiary, Northwest Natural Gas Company, provides regulated natural gas distribution services to residential, commercial, and industrial customers in the United States. It operates through three segments: NWN Gas Utility, SiEnergy, and NWN Water. The company operates mist gas storage facility contracted to utilities, third-party marketers, and electric generators; offers natural gas asset management services; interstate storage; and operates an ap…

Sector: Utilities Industry: Utilities - Regulated Gas Market Cap: $2.0B CIK: 1733998

Total Filings

Bullish Classifications

Bearish Classifications

Insider Transactions

Material Events (8-K)

Periodic Reports

Rule-based classifications for NWN currently lean bearish. Of the 20 filing records displayed, 4 carry bearish classifications (such as insider sales or negative 8-K disclosures) versus 0 bullish. This does not necessarily signal fundamental deterioration — insiders sell for many reasons — but it is worth monitoring alongside the company's core financial metrics.

NWN Filing Activity Snapshot 2026-05-29 — 2026-10-02

Insider Transactions (Form 4)

0 buys vs 4 sells

Net insider selling in this period — insiders sell for many reasons beyond conviction.

Largest Form 144 Filing

$1.16M

ANDERSON DAVID HUGO · 2026-06-26

21,000 shares · Form 144

Form 144 Notices

Proposed insider sale filed — Form 144 is a notice of intent, not a confirmed transaction. Actual sales are confirmed via Form 4.

Insider Transactions 12 · Forms 3, 4 and 5

A Form 4 is filed within two business days of a company insider — an officer, a director, or a holder of more than ten percent of the stock — changing their position in the shares. All 12 filings in this group are Form 4s for Northwest Natural Holding Company.

The difficulty with reading these filings as a group is that a single form type covers transactions that mean entirely different things. An executive spending their own money to buy stock and an executive having shares withheld to pay tax on a vesting grant both appear as a Form 4. Every filing below is therefore tagged with the nature of the underlying transaction, taken from the transaction code reported on the form itself.

Across the 12 insider filings shown, the breakdown is 4 open-market sale, 3 other reported transaction and 3 tax withholding. The remaining 2 filings report no transaction line — a holdings statement, or a form whose transaction table could not be read — so they are left unclassified rather than guessed at. 4 of them involved a discretionary open-market trade; the rest are compensation and administrative mechanics.

What each transaction type means

Open-market sale ×4: The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Other reported transaction ×3: The filing reports a transaction type that does not map to a routine purchase, sale, award or withholding.
Tax withholding ×3: Shares were withheld by the company to settle tax due when equity vested. This is an automatic administrative step and not a decision to sell.

Form 4 Tax withholding Tax / Compensation Filing 2026-10-02

NWN insider Form 4 filed for equity award, exercise, or tax withholding

Patterson Kyra (VP and Chief People Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were withheld by the company to settle tax due when equity vested. This is an automatic administrative step and not a decision to sell.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`F`	Tax withholding on vested shares	244	$46.67	$11.4K

Filing: Form 4 (Insider Transaction) Insider: Patterson Kyra (VP and Chief People Officer) Shares: 244

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-09-21

NWN insider ANDERSON DAVID HUGO (Director) sold 1,500 shares (~$72.0K)

ANDERSON DAVID HUGO, listed as Director at Northwest Natural Holding Co, reported an open-market sale of 1,500 NWN shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`S`	Open-market sale	1,500	$48.03	$72.0K

Filing: Form 4 (Insider Transaction) Insider: ANDERSON DAVID HUGO (Director) Shares: 1,500 Est. Value: $72.0K

View on SEC EDGAR → Open Filing Document →

Form 4 Tax withholding Tax / Compensation Filing 2026-09-03

NWN insider Form 4 filed for equity award, exercise, or tax withholding

Kaszuba Raymond J III (SVP & Chief Financial Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were withheld by the company to settle tax due when equity vested. This is an automatic administrative step and not a decision to sell.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`F`	Tax withholding on vested shares	705	$49.07	$34.6K

Filing: Form 4 (Insider Transaction) Insider: Kaszuba Raymond J III (SVP & Chief Financial Officer) Shares: 705

View on SEC EDGAR → Open Filing Document →

Form 4 Tax withholding Tax / Compensation Filing 2026-09-03

NWN insider Form 4 filed for equity award, exercise, or tax withholding

WILSON BRODY J (VP, Treas, Controller & CAO) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were withheld by the company to settle tax due when equity vested. This is an automatic administrative step and not a decision to sell.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`F`	Tax withholding on vested shares	341	$49.07	$16.7K

Filing: Form 4 (Insider Transaction) Insider: WILSON BRODY J (VP, Treas, Controller & CAO) Shares: 341

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-08-18

NWN insider ANDERSON DAVID HUGO (Director) sold 1,500 shares (~$76.3K)

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`S`	Open-market sale	1,500	$50.86	$76.3K

Filing: Form 4 (Insider Transaction) Insider: ANDERSON DAVID HUGO (Director) Shares: 1,500 Est. Value: $76.3K

View on SEC EDGAR → Open Filing Document →

Form 4 Other reported transaction Tax / Compensation Filing 2026-08-07

NWN insider Form 4 filed for equity award, exercise, or tax withholding

McDonough Sandra (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

The filing reports a transaction type that does not map to a routine purchase, sale, award or withholding.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`I`	Discretionary transaction	247	$50.77	$12.5K

Filing: Form 4 (Insider Transaction) Insider: McDonough Sandra (Director) Shares: 247

View on SEC EDGAR → Open Filing Document →

Form 4 Other reported transaction Tax / Compensation Filing 2026-08-07

NWN insider Form 4 filed for equity award, exercise, or tax withholding

Bragdon Peter J (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

The filing reports a transaction type that does not map to a routine purchase, sale, award or withholding.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`I`	Discretionary transaction	1,140	$50.77	$57.9K

Filing: Form 4 (Insider Transaction) Insider: Bragdon Peter J (Director) Shares: 1,140

View on SEC EDGAR → Open Filing Document →

Form 4 Other reported transaction Tax / Compensation Filing 2026-08-07

NWN insider Form 4 filed for equity award, exercise, or tax withholding

Ludford Mary E (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

The filing reports a transaction type that does not map to a routine purchase, sale, award or withholding.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`I`	Discretionary transaction	507	$50.77	$25.7K

Filing: Form 4 (Insider Transaction) Insider: Ludford Mary E (Director) Shares: 507

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-07-21

NWN insider ANDERSON DAVID HUGO (Director) sold 1,500 shares (~$76.8K)

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`S`	Open-market sale	1,500	$51.18	$76.8K

Filing: Form 4 (Insider Transaction) Insider: ANDERSON DAVID HUGO (Director) Shares: 1,500 Est. Value: $76.8K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-06-29

NWN insider ANDERSON DAVID HUGO (Director) sold 1,500 shares (~$76.4K)

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`S`	Open-market sale	1,500	$50.90	$76.4K

Filing: Form 4 (Insider Transaction) Insider: ANDERSON DAVID HUGO (Director) Shares: 1,500 Est. Value: $76.4K

View on SEC EDGAR → Open Filing Document →

Form 4 Tax / Compensation Filing 2026-05-29

NWN insider Form 4 filed for equity award, exercise, or tax withholding

Kravitz Zachary D (VP, Regulatory Affairs and) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Filing: Form 4 (Insider Transaction) Insider: Kravitz Zachary D (VP, Regulatory Affairs and)

View on SEC EDGAR → Open Filing Document →

Form 4 Tax / Compensation Filing 2026-05-29

NWN insider Form 4 filed for equity award, exercise, or tax withholding

Williams Kathryn M (VP, Chief PA & Sustainability) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Filing: Form 4 (Insider Transaction) Insider: Williams Kathryn M (VP, Chief PA & Sustainability)

View on SEC EDGAR → Open Filing Document →

Proposed Insider Sales 1 · Form 144

A Form 144 is a notice of intent to sell restricted or control securities. It is not a record that anything was sold. Northwest Natural Holding Company has 1 such notice in this period.

The distinction matters because a Form 144 is frequently reported as though it were a completed insider sale. The filer may sell all of the shares covered, some of them, or none at all, and there is no obligation to update the notice either way. A sale that is actually executed by an officer or director shows up separately on a Form 4, which is the filing to check before treating a proposed sale as a real one.

Form 144 Proposed Insider Sale 2026-06-26

NWN Form 144 filed for proposed insider sale by ANDERSON DAVID HUGO (21,000 shares) ~$1.16M

ANDERSON DAVID HUGO filed a Form 144 with the SEC indicating intent to sell NWN (Northwest Natural Holding Co) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: ANDERSON DAVID HUGO Shares: 21,000 Est. Value: $1.16M

View on SEC EDGAR → Open Filing Document →

Material Events 6 · Form 8-K

An 8-K reports a material event in the window between scheduled reports. There are 6 in this period for Northwest Natural Holding Company. Each 8-K names the item number it is filed under, and that number is the fastest way to tell a routine disclosure from a consequential one.

Item 2.02 is an earnings release, Item 5.02 is a change of directors or officers, and Item 1.01 or 2.01 covers a material agreement or a completed acquisition. Item 7.01 and Item 8.01 are the general-purpose disclosure items and carry no fixed meaning on their own.

Form 8-K Material Company Update 2026-09-23

NWN filed 8-K — material company event

Northwest Natural Holding Co filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.