Insider trade

Officer sold ~$612K of FANG shares in the open market

Traded May 15, 2026 · Filed May 19, 2026

~$612K
Reported value · 3,000 sh @ $204.0375: 25K
Holds after · shares reported: -8.9%
stock since the trade · S&P 500 +3.4%, $203.56 → $185.51 on Oct 1

Why it stands out

Diamondback Energy's Exec. VP and Chief Engineer sold $612K of Diamondback Energy shares. Nobody planned it ahead of time.

Written from the filing's own figures. OQRO describes what was reported and never tells you what to buy or sell

View the official recordSEC Form 4 — Statement of Changes in Beneficial Ownership

All the details

Dates, kept separate

Transaction date: May 15, 2026
Reporting period: Not applicable
Filed with the SEC: May 19, 2026

Officer$500K–$1M

Context

Classification

open market sale

Code S — open-market or private sale

Absolute commitment

~$612,113

Shares × reported transaction price

Timing vs results

11 days after results of May 4, 2026, 59 days before results of Jul 13, 2026

Results dates are the company's own 8-K (Item 2.02). Many companies only let insiders trade in a window after results

Price at the time

Closed at $203.56 on May 15, 2026, within 5% of its 52-week high, after a 5% rise over the previous 30 trading days

52-week range $134.53 (Sep 15, 2025) to $213.69 (May 4, 2026), 87% of the way up, from 251 adjusted closes. 30 trading days earlier: $193.88 on Apr 2, 2026. Describes the past only, not a forecast

Planned / mechanical clue

None found in footnotes

Only flagged when a footnote says so; never inferred

After it was reported

After	Stock	S&P 500	Difference
7 days	-5.6%	+1.2%	-6.9%
30 days	-8.1%	+0.4%	-8.5%
90 days	+2.8%	+3.5%	-0.8%

Past results only. Not a forecast.

Source receipt

Record ID: 0001539838-26-000087
Filed / recorded: May 19, 2026, 8:09 PM UTC
Added to OQRO: Oct 2, 2026, 12:27 PM UTC
Parser: form4-xml-v1
Data quality: Verified: identifiers matched exactly
Issuer: Diamondback Energy, Inc.
Issuer CIK: 1539838
Ticker: FANG
Reporting person: Albert Barkmann
Relationship: Officer
Officer title: Exec. VP and Chief Engineer
Security: Common Stock
Table: Non-derivative (Table I)
Transaction date: May 15, 2026
Transaction code: S
Shares / units: 3,000
Price per share: $204.0375
Acquired / disposed: Disposed (D)
Shares owned after: 24,571
Ownership form: Direct
Amendment: No

Footnotes from the filing

The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $204.00 per share to $204.07 per share, inclusive. The reporting person undertakes to provide to Diamondback Energy, Inc., any security holder of Diamondback Energy, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.