What SEC filings does Pinnacle West Capital Corporation submit to the SEC?

Pinnacle West Capital Corporation (PNW) 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 PNW?

A Form 4 for PNW 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 Pinnacle West Capital Corporation?

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 PNW?

The 10-K is Pinnacle West Capital Corporation'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 PNW SEC filings directly on EDGAR?

You can view all historical Pinnacle West Capital Corporation filings on the SEC EDGAR company page for PNW. Each filing card on this page links directly to the original SEC document.

How often does Pinnacle West Capital Corporation file with the SEC?

Pinnacle West Capital Corporation 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 PNW shares. 8-K filings occur whenever a material event happens — which can be several times per quarter for an active company.

PNW SEC Filing News — Pinnacle West Capital Corporation

Latest SEC filings for Pinnacle West Capital Corporation (PNW) 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: 2026-09-30.

Pinnacle West Capital Corporation, through its subsidiary, provides retail and wholesale electric services in the state of Arizona. The company engages in the generation, transmission, and distribution of electricity using nuclear, gas, oil, coal, and solar generating facilities. Its transmission facilities include overhead lines and underground lines; and distribution facilities consist of overhead lines and underground primary cables. The company also owns and maintains substations, including …

Sector: Utilities Industry: Utilities - Regulated Electric Market Cap: $12.3B

Total Filings

Bullish Classifications

Bearish Classifications

Insider Transactions

Material Events (8-K)

Periodic Reports

Rule-based classifications for PNW currently lean bearish. Of the 20 filing records displayed, 2 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.

PNW Filing Activity Snapshot 2026-05-18 — 2026-09-30

Insider Transactions (Form 4)

0 buys vs 2 sells

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

Largest Form 144 Filing

$183.6K

Esparza Jose Luis Jr (Insider) · 2026-08-11

1,800 shares · Form 4

Form 144 Notices

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

Insider Transactions 6 · 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 6 filings in this group are Form 4s for Pinnacle West Capital Corporation.

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 6 insider filings shown, the breakdown is 4 compensation award and 2 open-market sale. 2 of them involved a discretionary open-market trade; the rest are compensation and administrative mechanics.

What each transaction type means

Compensation award ×4: Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.
Open-market sale ×2: 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.

Form 4 Open-market sale Insider Selling 2026-08-11

PNW insider Blankenship Elizabeth A (VP, Controller and CAO) sold 980 shares (~$97.2K)

Blankenship Elizabeth A, listed as VP, Controller and CAO at PINNACLE WEST CAPITAL CORP, reported an open-market sale of 980 PNW 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	980	$99.17	$97.2K

Filing: Form 4 (Insider Transaction) Insider: Blankenship Elizabeth A (VP, Controller and CAO) Shares: 980 Est. Value: $97.2K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-08-11

PNW insider Esparza Jose Luis Jr (Insider) sold 1,800 shares (~$183.6K)

Esparza Jose Luis Jr, listed as Insider at PINNACLE WEST CAPITAL CORP, reported an open-market sale of 1,800 PNW 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	1,800	$102.01	$183.6K

Filing: Form 4 (Insider Transaction) Insider: Esparza Jose Luis Jr (Insider) Shares: 1,800 Est. Value: $183.6K

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-05-18

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

EICHER CAROL S (Director) 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 granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award derivative · Stock Units	1,665	—	—

Filing: Form 4 (Insider Transaction) Insider: EICHER CAROL S (Director)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-05-18

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

Butler Ronald Jr (Director) 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 granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award derivative · Stock Units	1,665	—	—

Filing: Form 4 (Insider Transaction) Insider: Butler Ronald Jr (Director)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-05-18

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

de la Melena Gonzalo A Jr (Director) 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 granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award derivative · Stock Units	1,665	—	—

Filing: Form 4 (Insider Transaction) Insider: de la Melena Gonzalo A Jr (Director)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-05-18

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

Flanagan Susan T. (Director) 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 granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award derivative · Stock Units	1,665	—	—

Filing: Form 4 (Insider Transaction) Insider: Flanagan Susan T. (Director)

View on SEC EDGAR → Open Filing Document →

Proposed Insider Sales 2 · 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. Pinnacle West Capital Corporation has 2 such notices 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 2026-08-07

PNW Form 144 filed for proposed insider sale by JOSE ESPARZA (1,800 shares) ~$183.6K

JOSE ESPARZA filed a Form 144 with the SEC indicating intent to sell PNW (PINNACLE WEST CAPITAL CORP) 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: JOSE ESPARZA Shares: 1,800 Est. Value: $183.6K

View on SEC EDGAR → Open Filing Document →

Form 144 Proposed Insider Sale 2026-08-07

PNW Form 144 filed for proposed insider sale by Elizabeth A Blankenship (980 shares) ~$98.8K

Elizabeth A Blankenship filed a Form 144 with the SEC indicating intent to sell PNW (PINNACLE WEST CAPITAL CORP) 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: Elizabeth A Blankenship Shares: 980 Est. Value: $98.8K

View on SEC EDGAR → Open Filing Document →

Material Events 11 · Form 8-K

An 8-K reports a material event in the window between scheduled reports. There are 11 in this period for Pinnacle West Capital Corporation. 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 2026-09-30

PNW filed 8-K — material company event

PINNACLE WEST CAPITAL CORP filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.