Greenidge Generation Holdings Inc. 8.50% Senior Notes due 2026 GREEL NASDAQ

NASDAQ Global Select • Technology • Software - Application • US • USD

Greenidge Generation Holdings Inc. 8.50% Senior Notes due 2026 (GREEL) has 12 known insider and institutional holders on record. The largest holder is Atlas Capital Resources GP LLC with 3,956,317 shares. Other notable holders include Anderson David Carl and MacKenzie Scott J..

Over the last 12 months, insiders have made 42 transactions in GREEL stock — 23 buys (valued at $891.65K) and 13 sells (valued at $32.04K). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.

GREEL Insider Ownership

Top Holder

Atlas Capital Resources GP LLC

3,956,317 shares

Buys (12 mo)

$891.65K value

Sells (12 mo)

$32.04K value

12-Month Transaction Activity

Buy 55%

Sell 31%

Top Insider Holders

#	Name	Role	Shares Owned	Last Filed	Relative Size
1	Atlas Capital Resources Gp Llc	10 Percent Owner	3,956,317	2026-01-12	100%
2	Anderson David Carl	Chief Executive Officer (ceo)	1,852,812	2022-10-12	47%
3	Mackenzie Scott J.	Chief Strategy Officer	1,224,030	2022-10-12	31%
4	Kovler Jordan	Chief Executive Officer	262,912	2026-03-13	7%
5	Irwin Dale	President	213,285	2026-03-13	5%
6	Mulvihill Christian	Chief Financial Officer	190,451	2026-03-13	5%
7	Krug Christopher J.	Director	174,107	2025-11-17	4%
8	Fearn Kenneth Hopkins Jr.	Director	174,107	2025-11-17	4%
9	Zeynel Charles M.	Director	83,493	2025-11-17	2%
10	Neuscheler Michael P	Director	37,113	2023-03-13	1%
11	Rothaupt Daniel	Director	20,530	2023-03-13	1%
12	Loughran Robert	Chief Financial Officer	13,457	2023-03-06	0%

Recent Transactions (last 12 months)

Date	Name	Role	Type	Shares	Price	Value
2026-03-11	Mulvihill Christian	Chief Financial Officer	Tax Withholding of RSU	34,010	$1.38	$46.93K
2026-03-04	Mulvihill Christian	Chief Financial Officer	RSU Award	95,000	-	-
2026-03-11	Kovler Jordan	Chief Executive Officer	Tax Withholding of RSU	26,785	$1.38	$36.96K
2026-03-04	Kovler Jordan	Chief Executive Officer	RSU Award	110,000	-	-
2026-03-11	Irwin Dale	President	Tax Withholding of RSU	39,655	$1.38	$54.72K
2026-03-04	Irwin Dale	President	RSU Award	110,000	-	-
2026-02-02	Mulvihill Christian	Chief Financial Officer	Informative Sell	1,953	$1.28	$2.5K
2026-02-02	Irwin Dale	President	Informative Sell	1,979	$1.28	$2.53K
2026-01-08	Atlas Capital Resources Gp Llc	10 Percent Owner	Other (Buy)	79,320	$2.06	$163.4K
2025-11-09	Zeynel Charles M.	Director	RSU Award	15,000	-	-
2025-11-09	Krug Christopher J.	Director	RSU Award	22,500	-	-
2025-11-09	Fearn Kenneth Hopkins Jr.	Director	RSU Award	22,500	-	-
2025-10-13	Mulvihill Christian	Chief Financial Officer	Informative Sell	609	$2.07	$1.26K
2025-10-09	Atlas Capital Resources Gp Llc	10 Percent Owner	Other (Buy)	102,286	$1.62	$165.7K
2025-09-16	Mulvihill Christian	Chief Financial Officer	Informative Sell	622	$1.46	$908.12
2025-08-18	Zeynel Charles M.	Director	RSU Award	68,493	-	-
2025-08-11	Zeynel Charles M.	Director	Unknown	-	-	-
2025-08-13	Mulvihill Christian	Chief Financial Officer	Informative Sell	615	$1.36	$836.40
2025-08-04	Mulvihill Christian	Chief Financial Officer	Informative Sell	1,696	$1.50	$2.54K
2025-08-04	Irwin Dale	President	Informative Sell	1,727	$1.50	$2.59K
2025-07-14	Mulvihill Christian	Chief Financial Officer	Informative Sell	611	$1.88	$1.15K
2025-07-02	Atlas Capital Resources Gp Llc	10 Percent Owner	Other (Buy)	131,937	$1.23	$162.28K
2025-06-13	Mulvihill Christian	Chief Financial Officer	Informative Sell	613	$1.45	$888.85
2025-05-21	Mulvihill Christian	Chief Financial Officer	Informative Sell	4,596	$1.30	$5.97K
2025-05-23	Kovler Jordan	Chief Executive Officer	Informative Buy	5,000	$1.56	$7.8K