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SCHEDULE 13D/A Filed 2026-09-17 Event 2026-09-16 SEC 0001140361-26-037012 →

Greth Lyndal → Diamondback Energy, Inc. FANG

Stake: 23.20% Shares: 64,957,047 CUSIP: 25278X109 Class: Common Stock, par value $0.01 per share
Composite Decision Signal · PASS (LOW BASE-RATE EDGE) Conviction Score: 35/100
  • Active Schedule 13D filer baseline
  • High conviction ownership stake (23.2%)
  • Held by 1 tracked 13F institutional manager
  • 36 NPORT-P mutual funds holding CUSIP

Item 4 — Purpose of Transaction

Item 4 is hereby amended and supplemented to add the following: On September 16, 2026, SGF FANG sold an aggregate of 9,079,675 shares of Common Stock at a price of $205.26 per share pursuant to Rule 144 under the Securities Act of 1933, as amended (the "September 16, 2026 Sale"). In connection with the September 16, 2026 Sale, SGF FANG is subject to a lock-up period from September 16, 2026 through the date 30 days after September 16, 2026, during which SGF FANG may not sell any shares of Common Stock without the mutual agreement of SGF FANG and Morgan Stanley & Co. LLC.

Cross-References

Insider Activity (last 365d)
0 transactions
0 buys · 0 sales · 0 awards/exercises
Issuer Cluster
2 13D/G filings on this issuer
1 other filing besides this one
Filer Track Record
2 filings by this filer
1 other filing in the data moat
Short Interest · settle 2026-10-15
DTC 2.97
6,876,071 shares short · -5.8% vs prior

Institutional Consensus · 2025-12-31

Held by elite portfolio managers
1 holder · $18.50M
Point72 Asset Mgmt

Other 13D/G Filings on Diamondback Energy, Inc.

FiledFormFilerStakeShares
2026-06-05 SCHEDULE 13D/A Greth Lyndal 26.30% 74,036,722 view →

Other Filings by Greth Lyndal

FiledFormIssuerStakeShares
2026-06-05 SCHEDULE 13D/A Diamondback Energy, Inc. FANG 26.30% 74,036,722 view →

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