Steven B Pfeiffer

Insider

First SEC filing: Sept. 30, 2009 · Latest: Sept. 30, 2009

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.
Derivatives Options and other derivative holdings reported by this person.
Initial holdings The stakes this person held when they first started reporting.

Insider at

IRDM selling March 8, 2022

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 16 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

16 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
March 8, 2022	IRDM	S	3,002	$39.60	$118,879	111,487 Direct	-2.62%	Disposed	21.9% (price as of 2026-08-20)
Jan. 5, 2022	IRDM	A	4,564	—	—	114,489 Direct	+4.15%	Acquired	(price as of 2026-08-20)
Jan. 6, 2021	IRDM	A	3,002	—	—	109,925 Direct	+2.81%	Acquired	(price as of 2026-08-20)
Jan. 6, 2020	IRDM	A	4,992	—	—	106,923 Direct	+4.90%	Acquired	(price as of 2026-08-20)
Nov. 1, 2019	IRDM	M	8,861	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Nov. 1, 2019	IRDM	S	8,861	$24.48	$216,917	101,931 Direct	-8.00%	Disposed	97.2% (price as of 2026-08-20)
Nov. 1, 2019	IRDM	M	8,861	$7.79	$69,027	110,792 Direct	+8.69%	Acquired	519.6% (price as of 2026-08-20)
Jan. 4, 2019	IRDM	A	6,510	—	—	101,931 Direct	+6.82%	Acquired	(price as of 2026-08-20)
Jan. 4, 2018	IRDM	A	9,205	—	—	95,421 Direct	+10.68%	Acquired	(price as of 2026-08-20)
Jan. 5, 2017	IRDM	A	8,295	—	—	86,216 Direct	+10.65%	Acquired	(price as of 2026-08-20)
Jan. 6, 2016	IRDM	A	10,856	—	—	77,921 Direct	+16.19%	Acquired	(price as of 2026-08-20)
Jan. 6, 2015	IRDM	A	9,804	$9.18	$90,001	67,064 Direct	+17.12%	Acquired	425.8% (price as of 2026-08-20)
Jan. 6, 2014	IRDM	A	14,516	$6.20	$89,999	57,260 Direct	+33.96%	Acquired	678.5% (price as of 2026-08-20)
Jan. 4, 2013	IRDM	A	13,120	$6.86	$90,003	42,744 Direct	+44.29%	Acquired	603.6% (price as of 2026-08-20)
Jan. 5, 2012	IRDM	A	12,517	—	—	29,625 Direct	+73.16%	Acquired	(price as of 2026-08-20)
Jan. 5, 2011	IRDM	A	10,817	—	—	17,107 Direct	+171.97%	Acquired	(price as of 2026-08-20)
Jan. 6, 2010	IRDM	A	8,861	—	—	8,861 Direct	—	Acquired	(price as of 2026-08-20)
Jan. 6, 2010	IRDM	A	6,290	—	—	6,290 Direct	—	Acquired	(price as of 2026-08-20)

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
Nov. 1, 2019	IRDM	Employee Stock Option (Right to Buy)	Common Stock (8,861)	$7.79	Jan. 6, 2020	8,861	Disposed
Jan. 6, 2010	IRDM	Employee Stock Option (right to buy)	Common Stock (8,861)	$7.79	Jan. 6, 2020	8,861	Acquired

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

Initial ownership (Form 3) 1 holding

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

Date	Ticker	Security	Shares	Ownership
Sept. 30, 2009	IRDM	No securities are benefically owned	0	Direct