Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

← United States · Coverage record

US · SEC FORM 4

Diamondback Energy, Inc.

FANG · Nasdaq · CIK 0001539838 · Energy · Oil & Gas E&P

INSIDER SIGNAL

No active buy signal

0 qualifying P purchase groups
in the current 180-day scoring window

61 Form 4 transaction lines observed in the same window
42 sales · 19 option, withholding, award, gift or other lines

Last qualifying purchase2025-02-28 · Tsuru Frank D. · $313.0K

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesHigh
Buy signal statusInactive
Score anatomy

No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.

ClusterNot calculated
Purchase sizeNot calculated
RoleNot calculated
RecencyNot calculated
ConvictionNot calculated

Why is there no score?

  • No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
  • Sales and other Form 4 activity remain visible as context and do not create a negative score.

Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
Meloy Charles AlvinDirector
▼▼○▼▼○○▼
Zmigrosky MattEVP, Chief Legal and Admin Off
▼▼▼▼○▼
Dick Teresa L.CAO, Exec. VP, Assist. Sec.
▼▼▼▼▼
Van't Hof Matthew KaesChief Executive Officer
▼○▼▼
Plaumann Mark LawrenceDirector
○▼▼
Greth Lyndal; SGF FANG Holdings, LPTenPercentOwner
▼▼▼
● Purchase▼ Sale○ Other

Showing the six most active owners; 13 additional owner(s) remain in Form 4 evidence.

Purchase breadth, concentration & cluster buying

These modules activate when qualifying purchases enter the 180-day research window.

SIGNAL HISTORY

No recorded active-signal snapshot

Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2025-02-28 · Tsuru Frank D..

Recent Form 4 activity

0Purchases
95Sales
75Other Form 4 lines
80SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING42 sale line(s) · context only
OTHER19 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
7,295,434
Previous report
7,630,501
Avg daily volume
4,282,899
Days to cover
1.7

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2025-02-28Tsuru Frank D.Purchase (P)Common Stock2,000USD 156.51USD 313,020SEC filing ↗
2024-12-16WEST STEVEN EPurchase (P)Common Stock6,000USD 162.66USD 975,960SEC filing ↗
2024-11-08REEVES ROBERT KPurchase (P)Common Stock2,832USD 180.00USD 509,760SEC filing ↗
2020-06-19Van't Hof Matthew KaesPurchase (P)Common Stock1,800USD 46.92USD 84,456SEC filing ↗
2020-03-19Van't Hof Matthew KaesPurchase (P)Common Stock4,750USD 17.23USD 81,842SEC filing ↗
2020-03-10Stice Travis D.Purchase (P)Common Stock17,146USD 28.40USD 486,946SEC filing ↗

Form 4 evidence

170 transaction lines in the latest 365-day window; 606 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-05Meloy Charles AlvinSale (S)Common Stock33,333USD 183.74USD 6,124,676SEC filing ↗
2026-09-16Meloy Charles AlvinGift (G)Common Stock37,500USD 0.00USD 0SEC filing ↗
2026-09-16Greth Lyndal; SGF FANG Holdings, LPSale (S)Common Stock9,079,675USD 205.26USD 1,863,694,090SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-05Meloy Charles AlvinSale (S)Common Stock33,333USD 183.74USD 6,124,676SEC filing ↗
2026-09-16Meloy Charles AlvinGift (G)Common Stock37,500USD 0.00USD 0SEC filing ↗
2026-09-16Greth Lyndal; SGF FANG Holdings, LPSale (S)Common Stock9,079,675USD 205.26USD 1,863,694,090SEC filing ↗
2026-09-16Greth Lyndal; SGF FANG Holdings, LPSale (S)Common Stock9,079,675USD 205.26USD 1,863,694,090SEC filing ↗
2026-09-15Zmigrosky MattSale (S)Common Stock1,326USD 212.56USD 281,855SEC filing ↗
2026-09-15Meloy Charles AlvinGift (G)Common Stock37,500USD 0.00USD 0SEC filing ↗
2026-09-15Dick Teresa L.Sale (S)Common Stock5,000USD 210.00USD 1,050,000SEC filing ↗
2026-09-11Stice Travis D.Sale (S)Common Stock75,000USD 204.31USD 15,323,250SEC filing ↗
2026-09-10Zmigrosky MattTax withholding (F)Common Stock861USD 202.63USD 174,464SEC filing ↗
2026-09-10Barkmann AlbertTax withholding (F)Common Stock682USD 202.63USD 138,194SEC filing ↗
2026-08-21Plaumann Mark LawrenceSale (S)Common Stock1,000USD 210.58USD 210,580SEC filing ↗
2026-08-20Wesson Daniel NSale (S)Common Stock7,500USD 215.21USD 1,614,075SEC filing ↗
2026-08-20Van't Hof Matthew KaesSale (S)Common Stock10,000USD 214.66USD 2,146,610SEC filing ↗
2026-08-14Zmigrosky MattSale (S)Common Stock2,500USD 202.77USD 506,925SEC filing ↗
2026-08-14Thompson Jere W IIISale (S)Common Stock500USD 204.14USD 102,070SEC filing ↗
2026-08-11Van't Hof Matthew KaesSale (S)Common Stock5,000USD 202.46USD 1,012,300SEC filing ↗
2026-08-03Meloy Charles AlvinSale (S)Common Stock33,333USD 198.41USD 6,613,538SEC filing ↗
2026-06-17Van't Hof Matthew KaesGift (G)Common Stock2,674USD 0.00USD 0SEC filing ↗
2026-06-16Meloy Charles AlvinSale (S)Common Stock83,334USD 187.12USD 15,593,239SEC filing ↗
2026-06-09Plaumann Mark LawrenceSale (S)Common Stock500USD 196.50USD 98,250SEC filing ↗
2026-06-04Dick Teresa L.Sale (S)Common Stock5,000USD 205.00USD 1,025,000SEC filing ↗
2026-06-04Greth Lyndal; SGF FANG Holdings, LPSale (S)Common Stock10,000,000USD 204.25USD 2,042,500,000SEC filing ↗
2026-06-03Zmigrosky MattSale (S)Common Stock5,000USD 210.00USD 1,050,000SEC filing ↗
2026-06-03Van't Hof Matthew KaesSale (S)Common Stock15,000USD 208.33USD 3,125,000SEC filing ↗
2026-06-02Dick Teresa L.Sale (S)Common Stock7,000USD 200.90USD 1,406,300SEC filing ↗
2026-06-01Zmigrosky MattSale (S)Common Stock5,000USD 200.54USD 1,002,700SEC filing ↗
2026-05-20WEST STEVEN EAward / grant (A)Common Stock982USD 0.00USD 0SEC filing ↗
2026-05-20Tsuru Frank D.Award / grant (A)Common Stock982USD 0.00USD 0SEC filing ↗
2026-05-20Trent Melanie MontagueAward / grant (A)Common Stock982USD 0.00USD 0SEC filing ↗
2026-05-20Stice Travis D.Award / grant (A)Common Stock982USD 0.00USD 0SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerFANG
CIK0001539838
SectorEnergy
IndustryOil & Gas E&P Yahoo Finance
SEC SIC1311 Crude Petroleum & Natural Gas
ExchangeNasdaq

Data coverage

Local Form 4 history606 transaction lines from 2020-02-21 to 2026-10-05
6 P purchase lines · 181 S sale lines · 419 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.