SCHEDULE 13D/A Filed 2026-07-08 Event 2026-07-06 SEC 0001193125-26-298548 →

Atlas Capital Resources (A9) LP → Greenidge Generation Holdings Inc. GREEL

Stake: 23.10% Shares: 2,913,565 CUSIP: 39531G100 Class: Class A Common Stock, par value $0.0001 per share

Item 4 — Purpose of Transaction

Not extracted from this filing — typically because it's an amendment (13D/A) and Item 4 is unchanged from the parent filing. Read the raw SEC filing →

Cross-References

Insider Activity (last 365d)

0 transactions

0 buys · 0 sales · 0 awards/exercises

Issuer Cluster

9 13D/G filings on this issuer

8 other filings besides this one

Filer Track Record

5 filings by this filer

4 other filings in the data moat

Short Interest · settle 2026-09-30

DTC 1.00

1,663 shares short · -89.2% vs prior

Post-Filing Returns · since 2026-07-06 on GREEL

+1 day

0.0%

+5 days

+5.3%

+30 days

—

+60 days

—

+90 days

—

+180 days

—

Anchor price 22.46 on closest trading day on/after 2026-07-06. Source: Yahoo Finance daily adj_close (split + dividend adjusted).

Other 13D/G Filings on Greenidge Generation Holdings Inc.

Filed	Form	Filer	Stake	Shares
2026-09-17	SCHEDULE 13D	Rogers George Ted III	8.50%	3,017,216	view →
2026-09-16	SCHEDULE 13D	MIG REF II INFR, LLC	8.23%	2,923,976	view →
2026-09-14	SCHEDULE 13D/A	Atlas Capital Resources (A9) LP	20.00%	5,008,865	view →
2026-09-11	SCHEDULE 13D	Conversant Capital LLC	9.80%	3,479,532	view →
2026-09-11	SCHEDULE 13G	BRC Group Holdings, Inc.	—	—	view →
2026-07-20	SCHEDULE 13D/A	Atlas Capital Resources (A9) LP	—	2,913,566	view →
2026-01-12	SCHEDULE	Atlas Capital Resources (A9) LP	25.00%	3,956,317	view →
2025-01-28	SCHEDULE	Atlas Capital Resources (A9) LP	27.40%	3,551,820	view →

Other Filings by Atlas Capital Resources (A9) LP

Filed	Form	Issuer	Stake	Shares
2026-09-14	SCHEDULE 13D/A	Vulcan Infrastructure and Power Inc.	20.00%	5,008,865	view →
2026-07-20	SCHEDULE 13D/A	Vulcan Infrastructure and Power Inc.	—	2,913,566	view →
2026-01-12	SCHEDULE	Greenidge Generation Holdings Inc. GREEL	25.00%	3,956,317	view →
2025-01-28	SCHEDULE	Greenidge Generation Holdings Inc. GREEL	27.40%	3,551,820	view →

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