Marc A Beilinson

Insider

First SEC filing: Dec. 9, 2016 · Latest: Dec. 9, 2016

On this page

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

Insider at

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 18 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

18 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
July 1, 2026	APOS	A	1,589	—	—	115,296 Direct	+1.40%	Acquired	(price as of 2026-08-19)
Feb. 24, 2026	PLTK	A	67,114	—	—	183,685 Direct	+57.57%	Acquired	(price as of 2026-08-19)
May 16, 2022	APOS	A	11,506	—	—	112,261 Direct	+11.42%	Acquired	(price as of 2026-08-19)
Jan. 1, 2022	APOS	A	100,755	—	—	100,755 Direct	—	Acquired	(price as of 2026-08-19)
Jan. 1, 2022	ATHS	D	5,588	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
Jan. 1, 2022	ATHS	D	82,102	—	—	5,588 Direct	-93.63%	Disposed	(price as of 2026-08-19)
Feb. 8, 2021	PLTK	A	9,259	—	—	9,259 Direct	—	Acquired	(price as of 2026-08-19)
Jan. 4, 2021	ATHS	A	4,010	—	—	87,690 Direct	+4.79%	Acquired	(price as of 2026-08-19)
March 13, 2020	ATHS	P	800	$22.41	$17,928	10,800 Indirect	+8.00%	Acquired	10.9% (price as of 2026-08-19)
March 2, 2020	ATHS	A	2,367	—	—	83,680 Direct	+2.91%	Acquired	(price as of 2026-08-19)
Jan. 2, 2020	ATHS	A	3,542	—	—	81,313 Direct	+4.55%	Acquired	(price as of 2026-08-19)
Sept. 19, 2019	ATHS	P	10,000	$25.00	$250,000	10,000 Indirect	—	Acquired	-0.6% (price as of 2026-08-19)
June 10, 2019	ATHS	P	10,000	$25.00	$250,000	10,000 Indirect	—	Acquired	-0.6% (price as of 2026-08-19)
Jan. 2, 2019	ATHS	A	4,133	—	—	77,771 Direct	+5.61%	Acquired	(price as of 2026-08-19)
Jan. 2, 2018	ATHS	A	2,653	—	—	73,638 Direct	+3.74%	Acquired	(price as of 2026-08-19)
April 3, 2017	ATHS	A	2,005	—	—	70,985 Direct	+2.91%	Acquired	(price as of 2026-08-19)
Jan. 3, 2017	ATHS	A	419	—	—	68,980 Direct	+0.61%	Acquired	(price as of 2026-08-19)
Dec. 15, 2016	ATHS	A	427	—	—	68,561 Direct	+0.63%	Acquired	(price as of 2026-08-19)
Nov. 10, 2010	ARI	D	5,077	—	—	2,014 Direct	-71.60%	Disposed	(price as of 2026-08-19)
April 1, 2010	ARI	A	2,091	—	—	7,091 Direct	+41.82%	Acquired	(price as of 2026-08-19)
Sept. 29, 2009	ARI	A	5,000	—	—	5,000 Direct	—	Acquired	(price as of 2026-08-19)

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.

Initial ownership (Form 3) 1 holding

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

Date	Ticker	Security	Shares	Ownership
Dec. 9, 2016	ATHS	Class A Common Shares	—	Direct