What SEC filings does Diamondback Energy, Inc. submit to the SEC?

Diamondback Energy, Inc. (FANG) 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 FANG?

A Form 4 for FANG 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 Diamondback Energy, Inc.?

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 FANG?

The 10-K is Diamondback Energy, Inc.'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 FANG SEC filings directly on EDGAR?

You can view all historical Diamondback Energy, Inc. filings on the SEC EDGAR company page for FANG. Each filing card on this page links directly to the original SEC document.

How often does Diamondback Energy, Inc. file with the SEC?

Diamondback Energy, Inc. 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 FANG shares. 8-K filings occur whenever a material event happens — which can be several times per quarter for an active company.

FANG SEC Filing News — Diamondback Energy, Inc.

Latest SEC filings for Diamondback Energy, Inc. (FANG) 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: 2026-10-08.

Diamondback Energy, Inc., an independent oil and natural gas company, acquires, develops, explores, and exploits unconventional, onshore oil and natural gas reserves in the Permian Basin in West Texas, the United States. The company primarily focuses on the development of the Spraberry and Wolfcamp formations of the Midland Basin; and the Wolfcamp and Bone Spring formations of the Delaware Basin, both of which are part of the Permian Basin in West Texas and New Mexico. Diamondback Energy, Inc. w…

Sector: Energy Industry: Oil & Gas E&P Market Cap: $56.9B

Total Filings

Bullish Classifications

Bearish Classifications

Insider Transactions

Material Events (8-K)

Periodic Reports

Rule-based classifications for FANG currently lean bearish. Of the 20 filing records displayed, 12 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.

FANG Filing Activity Snapshot 2026-08-24 — 2026-10-08

Insider Transactions (Form 4)

0 buys vs 9 sells

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

Largest Form 144 Filing

$1.92B

SGF FANG Holdings, LP · 2026-09-16

9,079,675 shares · Form 144

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 13 · 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 13 filings in this group are Form 4s for Diamondback Energy, Inc.

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 13 insider filings shown, the breakdown is 9 open-market sale, 2 tax withholding, 1 compensation award and 1 gift. 9 of them involved a discretionary open-market trade; the rest are compensation and administrative mechanics.

What each transaction type means

Open-market sale ×9: 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.
Tax withholding ×2: 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.
Compensation award ×1: 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.
Gift ×1: Shares were transferred as a gift, typically for estate or charitable planning. No sale into the market took place.

Form 4 Open-market sale Insider Selling 2026-10-07

FANG insider Meloy Charles Alvin (Director) sold 33,333 shares (~$6.12M)

Meloy Charles Alvin, listed as Director at Diamondback Energy, Inc., reported an open-market sale of 33,333 FANG 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	20,503	$183.17	$3.76M
`S`	Open-market sale	6,476	$184.31	$1.19M
`S`	Open-market sale	6,354	$184.99	$1.18M

Filing: Form 4 (Insider Transaction) Insider: Meloy Charles Alvin (Director) Shares: 33,333 Est. Value: $6.12M

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-09-17

FANG insider SGF FANG Holdings, LP (10% Owner) sold 9,079,675 shares (~$1.86B)

SGF FANG Holdings, LP, listed as 10% Owner at Diamondback Energy, Inc., reported an open-market sale of 9,079,675 FANG 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	9,079,675	$205.26	$1.86B

Filing: Form 4 (Insider Transaction) Insider: SGF FANG Holdings, LP (10% Owner) Shares: 9,079,675 Est. Value: $1.86B

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-09-17

FANG insider SGF FANG Holdings, LP (10% Owner) sold 9,079,675 shares (~$1.86B)

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	9,079,675	$205.26	$1.86B

Filing: Form 4 (Insider Transaction) Insider: SGF FANG Holdings, LP (10% Owner) Shares: 9,079,675 Est. Value: $1.86B

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-09-17

FANG insider Zmigrosky Matt (EVP, Chief Legal and Admin Off) sold 1,326 shares (~$281.8K)

Zmigrosky Matt, listed as EVP, Chief Legal and Admin Off at Diamondback Energy, Inc., reported an open-market sale of 1,326 FANG 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	1,326	$212.56	$281.8K

Filing: Form 4 (Insider Transaction) Insider: Zmigrosky Matt (EVP, Chief Legal and Admin Off) Shares: 1,326 Est. Value: $281.8K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-09-17

FANG insider Dick Teresa L. (EVP Accounting, Assist. Sec.) sold 5,000 shares (~$1.05M)

Dick Teresa L., listed as EVP Accounting, Assist. Sec. at Diamondback Energy, Inc., reported an open-market sale of 5,000 FANG 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	5,000	$210.00	$1.05M

Filing: Form 4 (Insider Transaction) Insider: Dick Teresa L. (EVP Accounting, Assist. Sec.) Shares: 5,000 Est. Value: $1.05M

View on SEC EDGAR → Open Filing Document →

Form 4 Gift Tax / Compensation Filing 2026-09-17

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

Meloy Charles Alvin (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 transferred as a gift, typically for estate or charitable planning. No sale into the market took place.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`G`	Gift	25,000	—	—
`G`	Gift	12,500	—	—
`G`	Gift	12,500	—	—
`G`	Gift	12,500	—	—
`G`	Gift	12,500	—	—
`G`	Gift	25,000	—	—

Filing: Form 4 (Insider Transaction) Insider: Meloy Charles Alvin (Director) Shares: 100,000

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-09-14

FANG insider Stice Travis D. (Director) sold 75,000 shares (~$15.32M)

Stice Travis D., listed as Director at Diamondback Energy, Inc., reported an open-market sale of 75,000 FANG 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	75,000	$204.31	$15.32M

Filing: Form 4 (Insider Transaction) Insider: Stice Travis D. (Director) Shares: 75,000 Est. Value: $15.32M

View on SEC EDGAR → Open Filing Document →

Form 4 Tax withholding Tax / Compensation Filing 2026-09-14

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

Zmigrosky Matt (EVP, Chief Legal and Admin Off) 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	861	$202.63	$174.5K

Filing: Form 4 (Insider Transaction) Insider: Zmigrosky Matt (EVP, Chief Legal and Admin Off) Shares: 861

View on SEC EDGAR → Open Filing Document →

Form 4 Tax withholding Tax / Compensation Filing 2026-09-14

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

Barkmann Albert (Exec. VP and Chief Engineer) 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	682	$202.63	$138.2K

Filing: Form 4 (Insider Transaction) Insider: Barkmann Albert (Exec. VP and Chief Engineer) Shares: 682

View on SEC EDGAR → Open Filing Document →

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

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

Diamondback Energy, Inc. (10% Owner) 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 · Class B Common Stock	2,808,459	—	—
`A`	Compensation award derivative · Operating Company Units	2,808,459	—	—
`A`	Compensation award derivative · Class B Common Stock	1,007,000	—	—
`A`	Compensation award derivative · Operating Company Units	1,007,000	—	—

Filing: Form 4 (Insider Transaction) Insider: Diamondback Energy, Inc. (10% Owner)

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-08-24

FANG insider Van't Hof Matthew Kaes (Director, Chief Executive Officer) sold 10,000 shares (~$2.15M)

Van't Hof Matthew Kaes, listed as Director, Chief Executive Officer at Diamondback Energy, Inc., reported an open-market sale of 10,000 FANG 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	9,500	$214.64	$2.04M
`S`	Open-market sale	500	$215.06	$107.5K

Filing: Form 4 (Insider Transaction) Insider: Van't Hof Matthew Kaes (Director, Chief Executive Officer) Shares: 10,000 Est. Value: $2.15M

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-08-24

FANG insider Wesson Daniel N (Exec. VP & COO) sold 7,500 shares (~$1.61M)

Wesson Daniel N, listed as Exec. VP & COO at Diamondback Energy, Inc., reported an open-market sale of 7,500 FANG 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	7,500	$215.21	$1.61M

Filing: Form 4 (Insider Transaction) Insider: Wesson Daniel N (Exec. VP & COO) Shares: 7,500 Est. Value: $1.61M

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-08-24

FANG insider Plaumann Mark Lawrence (Director) sold 1,000 shares (~$210.6K)

Plaumann Mark Lawrence, listed as Director at Diamondback Energy, Inc., reported an open-market sale of 1,000 FANG 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	1,000	$210.58	$210.6K

Filing: Form 4 (Insider Transaction) Insider: Plaumann Mark Lawrence (Director) Shares: 1,000 Est. Value: $210.6K

View on SEC EDGAR → Open Filing Document →

Proposed Insider Sales 5 · 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. Diamondback Energy, Inc. has 5 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 Large Proposed Insider Sale 2026-10-05

FANG Form 144 filed for proposed insider sale by Charles A. Meloy (33,333 shares) ~$6.14M

Charles A. Meloy filed a Form 144 with the SEC indicating intent to sell FANG (Diamondback Energy, Inc.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4. The proposed dollar value is large enough to merit attention.

Filing: Form 144 (Proposed Sale Notice) Insider: Charles A. Meloy Shares: 33,333 Est. Value: $6.14M

View on SEC EDGAR → Open Filing Document →

Form 144 Large Proposed Insider Sale 2026-09-16

FANG Form 144 filed for proposed insider sale by SGF FANG Holdings, LP (9,079,675 shares) ~$1.92B

SGF FANG Holdings, LP filed a Form 144 with the SEC indicating intent to sell FANG (Diamondback Energy, Inc.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4. The proposed dollar value is large enough to merit attention.

Filing: Form 144 (Proposed Sale Notice) Insider: SGF FANG Holdings, LP Shares: 9,079,675 Est. Value: $1.92B

View on SEC EDGAR → Open Filing Document →

Form 144 Proposed Insider Sale 2026-09-15

FANG Form 144 filed for proposed insider sale by Dick Teresa L. (5,000 shares) ~$1.05M

Dick Teresa L. filed a Form 144 with the SEC indicating intent to sell FANG (Diamondback Energy, Inc.) 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: Dick Teresa L. Shares: 5,000 Est. Value: $1.05M

View on SEC EDGAR → Open Filing Document →

Form 144 Proposed Insider Sale 2026-09-15

FANG Form 144 filed for proposed insider sale by Zmigrosky Matt (1,326 shares) ~$281.8K

Zmigrosky Matt filed a Form 144 with the SEC indicating intent to sell FANG (Diamondback Energy, Inc.) 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: Zmigrosky Matt Shares: 1,326 Est. Value: $281.8K

View on SEC EDGAR → Open Filing Document →

Form 144 Large Proposed Insider Sale 2026-09-11

FANG Form 144 filed for proposed insider sale by Stice Travis D. (75,000 shares) ~$15.32M

Stice Travis D. filed a Form 144 with the SEC indicating intent to sell FANG (Diamondback Energy, Inc.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4. The proposed dollar value is large enough to merit attention.

Filing: Form 144 (Proposed Sale Notice) Insider: Stice Travis D. Shares: 75,000 Est. Value: $15.32M

View on SEC EDGAR → Open Filing Document →

Material Events 2 · Form 8-K

An 8-K reports a material event in the window between scheduled reports. There are 2 in this period for Diamondback Energy, Inc. 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 2026-10-08

FANG filed 8-K — material company event

Diamondback Energy, Inc. filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Form 8-K Material Company Update 2026-09-30

FANG filed 8-K — material company event

Diamondback Energy, Inc. filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

How we classify Diamondback Energy, Inc.'s filings

Straight from EDGAR

Each displayed record links to an original source document. StrongBuyAnalytics provides navigation and brief excerpts or summaries, not the filing itself. Parsing may omit context or contain errors, so read the original document in full.

Transaction codes, not guesswork

The nature shown on each insider filing comes from the transaction code the filer entered on the form itself — P for an open-market purchase, A for a compensation award, F for shares withheld to pay tax, M for an option exercise. Where one filing contains several codes, the transaction table lists them line by line.

Why the distinction matters

Insider activity is routinely summarised as buying or selling, which flattens together decisions that mean very different things. Shares withheld for tax on a vesting grant are an automatic administrative step; shares bought on the open market are someone committing their own money at the current price.

What this page does not tell you

A filing records what happened, not why. Form 4 does not always disclose whether a sale was executed under a pre-arranged Rule 10b5-1 plan, and no single filing is a basis for a decision on FANG. Read these alongside the fundamentals rather than in isolation.

Frequently Asked Questions — FANG SEC Filings

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Publisher, sources & limitations — September 15, 2026. StrongBuyAnalytics provides navigation and brief excerpts or summaries for educational use. Original filings remain at SEC EDGAR or other displayed source links; StrongBuyAnalytics does not author them. Filing dates are source dates, not publication dates for this page. Coverage can be delayed, incomplete, amended, or unavailable because of SEC/source availability, parsing, caching, or outages. Verify every material statement in the original filing.

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