Mark Gruber

Insider

First SEC filing: Sept. 6, 2013 · Latest: Sept. 6, 2013

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Insider at Companies where this person is a reporting insider.
Insider transactions Every share this person bought or sold, from Form 4 filings.
Derivatives Options and other derivative holdings reported by this person.
Initial holdings The stakes this person held when they first started reporting.

Insider at

ARR buying June 15, 2020

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 87 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

87 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Feb. 22, 2024	ARR	M	1,660	—	—	23,588 Direct	+7.57%	Acquired	(price as of 2026-08-28)
Feb. 22, 2024	ARR	F	415	$18.80	$7,802	23,173 Direct	-1.76%	Disposed	-12.5% (price as of 2026-08-28)
Feb. 22, 2024	ARR	M	1,660	—	—	30,420 Direct	-5.17%	Disposed	(price as of 2026-08-28)
Nov. 21, 2023	ARR	M	1,660	—	—	22,270 Direct	+8.05%	Acquired	(price as of 2026-08-28)
Nov. 21, 2023	ARR	D	342	$17.41	$5,954	21,928 Direct	-1.54%	Disposed	-5.5% (price as of 2026-08-28)
Nov. 21, 2023	ARR	M	1,660	—	—	32,080 Direct	-4.92%	Disposed	(price as of 2026-08-28)
Aug. 22, 2023	ARR	M	8,300	—	—	104,981 Direct	+8.58%	Acquired	(price as of 2026-08-28)
Aug. 22, 2023	ARR	D	1,930	$4.63	$8,936	103,051 Direct	-1.84%	Disposed	-28.9% (price as of 2026-08-28)
Aug. 22, 2023	ARR	M	8,300	—	—	168,700 Direct	-4.69%	Disposed	(price as of 2026-08-28)
May 23, 2023	ARR	M	8,300	—	—	98,647 Direct	+9.19%	Acquired	(price as of 2026-08-28)
May 23, 2023	ARR	D	1,966	$4.82	$9,476	96,681 Direct	-1.99%	Disposed	-31.7% (price as of 2026-08-28)
May 23, 2023	ARR	M	8,300	—	—	177,000 Direct	-4.48%	Disposed	(price as of 2026-08-28)
Feb. 21, 2023	ARR	M	8,300	—	—	92,646 Direct	+9.84%	Acquired	(price as of 2026-08-28)
Feb. 21, 2023	ARR	D	2,299	$5.63	$12,943	90,347 Direct	-2.48%	Disposed	-41.5% (price as of 2026-08-28)
Feb. 21, 2023	ARR	M	8,300	—	—	185,300 Direct	-4.29%	Disposed	(price as of 2026-08-28)
Feb. 14, 2023	ARR	A	168,000	—	—	193,600 Direct	+656.25%	Acquired	(price as of 2026-08-28)
Nov. 22, 2022	ARR	M	4,050	—	—	85,141 Direct	+4.99%	Acquired	(price as of 2026-08-28)
Nov. 22, 2022	ARR	D	795	$5.67	$4,508	84,346 Direct	-0.93%	Disposed	-42.0% (price as of 2026-08-28)
Nov. 22, 2022	ARR	M	4,050	—	—	25,600 Direct	-13.66%	Disposed	(price as of 2026-08-28)
Aug. 23, 2022	ARR	M	4,050	—	—	81,939 Direct	+5.20%	Acquired	(price as of 2026-08-28)
Aug. 23, 2022	ARR	D	848	—	—	81,091 Direct	-1.03%	Disposed	(price as of 2026-08-28)
Aug. 23, 2022	ARR	M	4,050	—	—	29,650 Direct	-12.02%	Disposed	(price as of 2026-08-28)
May 23, 2022	ARR	M	4,050	—	—	78,745 Direct	+5.42%	Acquired	(price as of 2026-08-28)
May 23, 2022	ARR	D	856	$7.33	$6,274	77,889 Direct	-1.09%	Disposed	-55.1% (price as of 2026-08-28)
May 23, 2022	ARR	M	4,050	—	—	33,700 Direct	-10.73%	Disposed	(price as of 2026-08-28)
Nov. 23, 2021	ARR	M	4,050	—	—	72,767 Direct	+5.89%	Acquired	(price as of 2026-08-28)
Nov. 23, 2021	ARR	D	1,022	$10.13	$10,353	71,745 Direct	-1.40%	Disposed	-67.5% (price as of 2026-08-28)
Nov. 23, 2021	ARR	M	4,050	—	—	41,800 Direct	-8.83%	Disposed	(price as of 2026-08-28)
Aug. 24, 2021	ARR	M	4,050	—	—	69,756 Direct	+6.16%	Acquired	(price as of 2026-08-28)
Aug. 24, 2021	ARR	D	1,039	$10.50	$10,910	68,717 Direct	-1.49%	Disposed	-68.7% (price as of 2026-08-28)
Aug. 24, 2021	ARR	M	4,050	—	—	45,850 Direct	-8.12%	Disposed	(price as of 2026-08-28)
May 24, 2021	ARR	M	4,050	—	—	66,796 Direct	+6.45%	Acquired	(price as of 2026-08-28)
May 24, 2021	ARR	D	1,090	$11.99	$13,069	65,706 Direct	-1.63%	Disposed	-72.6% (price as of 2026-08-28)
May 24, 2021	ARR	M	4,050	—	—	49,900 Direct	-7.51%	Disposed	(price as of 2026-08-28)
Feb. 25, 2021	ARR	M	4,050	—	—	63,980 Direct	+6.76%	Acquired	(price as of 2026-08-28)
Feb. 25, 2021	ARR	D	1,234	$12.02	$14,833	62,746 Direct	-1.93%	Disposed	-72.6% (price as of 2026-08-28)
Feb. 25, 2021	ARR	M	4,050	—	—	53,950 Direct	-6.98%	Disposed	(price as of 2026-08-28)
Jan. 12, 2021	ARR	A	20,000	—	—	58,000 Direct	+52.63%	Acquired	(price as of 2026-08-28)
Nov. 23, 2020	ARR	M	3,250	—	—	60,680 Direct	+5.66%	Acquired	(price as of 2026-08-28)
Nov. 23, 2020	ARR	D	750	$10.51	$7,882	59,930 Direct	-1.24%	Disposed	-68.7% (price as of 2026-08-28)
Nov. 23, 2020	ARR	M	3,250	—	—	38,000 Direct	-7.88%	Disposed	(price as of 2026-08-28)
Aug. 24, 2020	ARR	M	3,250	—	—	58,140 Direct	+5.92%	Acquired	(price as of 2026-08-28)
Aug. 24, 2020	ARR	D	710	$9.61	$6,823	57,430 Direct	-1.22%	Disposed	-65.8% (price as of 2026-08-28)
Aug. 24, 2020	ARR	M	3,250	—	—	41,250 Direct	-7.30%	Disposed	(price as of 2026-08-28)
June 30, 2020	ARR	A	13,500	—	—	44,500 Direct	+43.55%	Acquired	(price as of 2026-08-28)
June 15, 2020	ARR	P	3,000	$8.80	$26,400	54,890 Direct	+5.78%	Acquired	-62.6% (price as of 2026-08-28)
May 22, 2020	ARR	M	2,250	—	—	52,300 Direct	+4.50%	Acquired	(price as of 2026-08-28)
May 22, 2020	ARR	D	410	$8.16	$3,346	51,890 Direct	-0.78%	Disposed	-59.7% (price as of 2026-08-28)
May 22, 2020	ARR	M	2,250	—	—	31,000 Direct	-6.77%	Disposed	(price as of 2026-08-28)
Feb. 21, 2020	ARR	M	3,750	—	—	50,050 Direct	+8.10%	Acquired	(price as of 2026-08-28)
Feb. 21, 2020	ARR	M	3,750	—	—	48,250 Direct	-7.21%	Disposed	(price as of 2026-08-28)
Jan. 28, 2020	ARR	A	1,000	$25.00	$25,000	1,000 Direct	—	Acquired	-86.8% (price as of 2026-08-28)
Jan. 14, 2020	ARR	A	15,000	—	—	52,000 Direct	+40.54%	Acquired	(price as of 2026-08-28)
Nov. 21, 2019	ARR	M	3,000	—	—	46,300 Direct	+6.93%	Acquired	(price as of 2026-08-28)
Nov. 21, 2019	ARR	M	3,000	—	—	37,000 Direct	-7.50%	Disposed	(price as of 2026-08-28)
Aug. 21, 2019	ARR	M	3,000	—	—	43,300 Direct	+7.44%	Acquired	(price as of 2026-08-28)
Aug. 21, 2019	ARR	M	3,000	—	—	40,000 Direct	-6.98%	Disposed	(price as of 2026-08-28)
May 21, 2019	ARR	M	3,000	—	—	40,300 Direct	+8.04%	Acquired	(price as of 2026-08-28)
May 21, 2019	ARR	M	3,000	—	—	43,000 Direct	-6.52%	Disposed	(price as of 2026-08-28)
Feb. 21, 2019	ARR	M	3,000	—	—	37,300 Direct	+8.75%	Acquired	(price as of 2026-08-28)
Feb. 21, 2019	ARR	M	3,000	—	—	46,000 Direct	-6.12%	Disposed	(price as of 2026-08-28)
Nov. 21, 2018	ARR	M	3,000	—	—	34,300 Direct	+9.58%	Acquired	(price as of 2026-08-28)
Nov. 21, 2018	ARR	M	3,000	—	—	49,000 Direct	-5.77%	Disposed	(price as of 2026-08-28)
Aug. 22, 2018	ARR	M	3,000	—	—	31,300 Direct	+10.60%	Acquired	(price as of 2026-08-28)
Aug. 22, 2018	ARR	M	3,000	—	—	52,000 Direct	-5.45%	Disposed	(price as of 2026-08-28)
May 22, 2018	ARR	M	3,000	—	—	28,300 Direct	+11.86%	Acquired	(price as of 2026-08-28)
May 22, 2018	ARR	M	3,000	—	—	55,000 Direct	-5.17%	Disposed	(price as of 2026-08-28)
Feb. 22, 2018	ARR	M	3,000	—	—	25,300 Direct	+13.45%	Acquired	(price as of 2026-08-28)
Feb. 22, 2018	ARR	M	3,000	—	—	58,000 Direct	-4.92%	Disposed	(price as of 2026-08-28)
Feb. 20, 2018	ARR	P	2,000	$22.70	$45,400	22,300 Direct	+9.85%	Acquired	-85.5% (price as of 2026-08-28)
Jan. 2, 2018	ARR	M	342	—	—	20,300 Direct	+1.71%	Acquired	(price as of 2026-08-28)
Nov. 20, 2017	ARR	A	61,000	—	—	61,000 Direct	—	Acquired	(price as of 2026-08-28)
Oct. 30, 2017	ARR	P	4,000	$25.38	$101,520	19,958 Direct	+25.07%	Acquired	-87.0% (price as of 2026-08-28)
Oct. 2, 2017	ARR	M	339	—	—	15,958 Direct	+2.17%	Acquired	(price as of 2026-08-28)
July 31, 2017	ARR	P	2,000	$25.33	$50,660	15,619 Direct	+14.69%	Acquired	-87.0% (price as of 2026-08-28)
July 3, 2017	ARR	M	342	—	—	13,619 Direct	+2.58%	Acquired	(price as of 2026-08-28)
May 4, 2017	ARR	P	2,000	$25.05	$50,100	13,277 Direct	+17.74%	Acquired	-86.9% (price as of 2026-08-28)
April 3, 2017	ARR	M	345	—	—	11,277 Direct	+3.16%	Acquired	(price as of 2026-08-28)
Feb. 21, 2017	ARR	P	2,000	$21.71	$43,420	10,932 Direct	+22.39%	Acquired	-84.8% (price as of 2026-08-28)
Jan. 3, 2017	ARR	M	483	—	—	8,932 Direct	+5.72%	Acquired	(price as of 2026-08-28)
Oct. 3, 2016	ARR	M	481	—	—	8,449 Direct	+6.04%	Acquired	(price as of 2026-08-28)
July 1, 2016	ARR	M	487	—	—	7,968 Direct	+6.51%	Acquired	(price as of 2026-08-28)
April 1, 2016	ARR	M	489	—	—	7,481 Direct	+6.99%	Acquired	(price as of 2026-08-28)
Jan. 5, 2016	ARR	M	526	—	—	6,992 Direct	+8.13%	Acquired	(price as of 2026-08-28)
Oct. 1, 2015	ARR	M	531	—	—	6,466 Direct	+8.95%	Acquired	(price as of 2026-08-28)
July 1, 2015	ARR	M	4,204	—	—	47,482 Direct	+9.71%	Acquired	(price as of 2026-08-28)
April 2, 2015	ARR	M	4,201	—	—	43,278 Direct	+10.75%	Acquired	(price as of 2026-08-28)
Jan. 5, 2015	ARR	M	4,088	—	—	39,077 Direct	+11.68%	Acquired	(price as of 2026-08-28)
Oct. 6, 2014	ARR	M	4,062	—	—	34,989 Direct	+13.13%	Acquired	(price as of 2026-08-28)
July 1, 2014	ARR	M	3,997	—	—	30,927 Direct	+14.84%	Acquired	(price as of 2026-08-28)
April 3, 2014	ARR	M	3,814	—	—	26,930 Direct	+16.50%	Acquired	(price as of 2026-08-28)
Jan. 6, 2014	ARR	M	4,029	—	—	23,116 Direct	+21.11%	Acquired	(price as of 2026-08-28)
Oct. 2, 2013	ARR	M	4,157	—	—	19,087 Direct	+27.84%	Acquired	(price as of 2026-08-28)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II)

Options, RSUs and convertible securities reported on Form 4 Table II.

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
Feb. 22, 2024	ARR	Phantom Stock	Common Stock (1,660)	—	—	1,660	Disposed
Nov. 21, 2023	ARR	Phantom Stock	Common Stock (1,660)	—	—	1,660	Disposed
Aug. 22, 2023	ARR	Phantom Stock	Common Stock (8,300)	—	—	8,300	Disposed
May 23, 2023	ARR	Phantom Stock [F1]	Common Stock (8,300)	—	—	8,300	Disposed
Feb. 21, 2023	ARR	Phantom Stock	Common Stock (8,300)	—	—	8,300	Disposed
Feb. 14, 2023	ARR	Phantom Stock [F1,F2,F3,F4]	Common Stock (168,000)	—	—	168,000	Acquired
Nov. 22, 2022	ARR	Phantom Stock	Common Stock (4,050)	—	—	4,050	Disposed
Aug. 23, 2022	ARR	Phantom Stock	Common Stock (4,050)	—	—	4,050	Disposed
May 23, 2022	ARR	Phantom Stock	Common Stock (4,050)	—	—	4,050	Disposed
Nov. 23, 2021	ARR	Phantom Stock	Common Stock (4,050)	—	—	4,050	Disposed
Aug. 24, 2021	ARR	Phantom Stock	Common Stock (4,050)	—	—	4,050	Disposed
May 24, 2021	ARR	Phantom Stock	Common Stock (4,050)	—	—	4,050	Disposed
Feb. 25, 2021	ARR	Phantom Stock	Common Stock (4,050)	—	—	4,050	Disposed
Jan. 12, 2021	ARR	Phantom Stock [F1,F2,F3,F4]	Common Stock (20,000)	—	—	20,000	Acquired
Nov. 23, 2020	ARR	Phantom Stock	Common Stock (3,250)	—	—	3,250	Disposed
Aug. 24, 2020	ARR	Phantom Stock	Common Stock (3,250)	—	—	3,250	Disposed
June 30, 2020	ARR	Phantom Stock [F2,F3,F4,F5]	Common Stock (13,500)	—	—	13,500	Acquired
May 22, 2020	ARR	Phantom Stock	Common Stock (2,250)	—	—	2,250	Disposed
Feb. 21, 2020	ARR	Phantom Stock	Common Stock (3,750)	—	—	3,750	Disposed
Jan. 28, 2020	ARR	7.00% Series C Cumulative Redeemable Preferred Stock	Common Stock, par value $0.001 per share	—	—	1,000	Acquired
Jan. 14, 2020	ARR	Phantom Stock [F2,F3,F4,F5]	Common Stock (15,000)	—	—	15,000	Acquired
Nov. 21, 2019	ARR	Phantom Stock	Common Stock (3,000)	—	—	3,000	Disposed
Aug. 21, 2019	ARR	Phantom Stock	Common Stock (3,000)	—	—	3,000	Disposed
May 21, 2019	ARR	Phantom Stock	Common Stock (3,000)	—	—	3,000	Disposed
Feb. 21, 2019	ARR	Phantom Stock	Common Stock (3,000)	—	—	3,000	Disposed
Nov. 21, 2018	ARR	Phantom Stock	Common Stock (3,000)	—	—	3,000	Disposed
Aug. 22, 2018	ARR	Phantom Stock	Common Stock (3,000)	—	—	3,000	Disposed
May 22, 2018	ARR	Phantom Stock	Common Stock (3,000)	—	—	3,000	Disposed
Feb. 22, 2018	ARR	Phantom Stock	Common Stock (3,000)	—	—	3,000	Disposed
Nov. 20, 2017	ARR	Phantom Stock [F1,F2,F3,F4]	Common Stock (61,000)	—	—	61,000	Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 19 holdings

Securities held when first becoming an insider, per SEC Form 3.

Date	Ticker	Security	Shares	Ownership
Sept. 6, 2013	ARR	Common Stock	14,930	Direct
Sept. 6, 2013	ARR	Phantom Stock→ Common Stock (5,383)	5,383	Direct
Sept. 6, 2013	ARR	Phantom Stock→ Common Stock (5,383)	5,383	Direct
Sept. 6, 2013	ARR	Phantom Stock→ Common Stock (5,383)	5,383	Direct
Sept. 6, 2013	ARR	Phantom Stock→ Common Stock (5,383)	5,383	Direct
Sept. 6, 2013	ARR	Phantom Stock→ Common Stock (5,383)	5,383	Direct
Sept. 6, 2013	ARR	Phantom Stock→ Common Stock (5,383)	5,383	Direct
Sept. 6, 2013	ARR	Phantom Stock→ Common Stock (5,383)	5,383	Direct
Sept. 6, 2013	ARR	Phantom Stock→ Common Stock (5,383)	5,383	Direct
Sept. 6, 2013	ARR	Phantom Stock→ Common Stock (5,383)	5,383	Direct
Sept. 6, 2013	ARR	Phantom Stock→ Common Stock (5,383)	5,383	Direct
Sept. 6, 2013	ARR	Phantom Stock→ Common Stock (4,883)	4,883	Direct
Sept. 6, 2013	ARR	Phantom Stock→ Common Stock (4,883)	4,883	Direct
Sept. 6, 2013	ARR	Phantom Stock→ Common Stock (4,883)	4,883	Direct
Sept. 6, 2013	ARR	Phantom Stock→ Common Stock (4,883)	4,883	Direct
Sept. 6, 2013	ARR	Phantom Stock→ Common Stock (3,383)	3,383	Direct
Sept. 6, 2013	ARR	Phantom Stock→ Common Stock (3,383)	3,383	Direct
Sept. 6, 2013	ARR	Phantom Stock→ Common Stock (3,383)	3,383	Direct
Sept. 6, 2013	ARR	Phantom Stock→ Common Stock (3,392)	3,392	Direct