Mark J. Isaacson

Insider

First SEC filing: Aug. 22, 2014 · Latest: Aug. 22, 2014

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

MOS selling April 18, 2022

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 44 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

44 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
April 18, 2022	MOS	M 10b5-1	7,461	$50.43	$376,258	60,330 Direct	+14.11%	Acquired	-54.6% (price as of 2026-08-20)
April 18, 2022	MOS	S 10b5-1	14,461	$76.02	$1,099,325	45,869 Direct	-23.97%	Disposed	-69.9% (price as of 2026-08-20)
April 18, 2022	MOS	M	7,461	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 7, 2022	MOS	M	10,148	—	—	48,291 Direct	+26.61%	Acquired	(price as of 2026-08-20)
March 7, 2022	MOS	M	16,924	—	—	65,215 Direct	+35.05%	Acquired	(price as of 2026-08-20)
March 7, 2022	MOS	F	12,346	$61.14	$754,834	52,869 Direct	-18.93%	Disposed	-62.6% (price as of 2026-08-20)
March 7, 2022	MOS	M	10,148	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 3, 2022	MOS	A	9,342	—	—	9,342 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 8, 2022	MOS	M 10b5-1	19,912	$28.49	$567,293	58,055 Direct	+52.20%	Acquired	-19.7% (price as of 2026-08-20)
Feb. 8, 2022	MOS	S 10b5-1	19,912	$45.00	$896,040	38,143 Direct	-34.30%	Disposed	-49.2% (price as of 2026-08-20)
Feb. 8, 2022	MOS	M 10b5-1	20,182	$30.42	$613,936	58,325 Direct	+52.91%	Acquired	-24.8% (price as of 2026-08-20)
Feb. 8, 2022	MOS	S 10b5-1	20,182	$45.00	$908,190	38,143 Direct	-34.60%	Disposed	-49.2% (price as of 2026-08-20)
Feb. 8, 2022	MOS	M	19,912	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Feb. 8, 2022	MOS	M	20,182	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 8, 2021	MOS	M	9,772	—	—	31,834 Direct	+44.29%	Acquired	(price as of 2026-08-20)
March 8, 2021	MOS	A	19,791	—	—	51,625 Direct	+62.17%	Acquired	(price as of 2026-08-20)
March 8, 2021	MOS	F	13,482	$30.70	$413,897	38,143 Direct	-26.12%	Disposed	-25.5% (price as of 2026-08-20)
March 8, 2021	MOS	M	9,772	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 4, 2021	MOS	A	13,527	—	—	13,527 Direct	—	Acquired	(price as of 2026-08-20)
March 17, 2020	MOS	P	1,000	$9.66	$9,660	22,062 Direct	+4.75%	Acquired	136.9% (price as of 2026-08-20)
March 9, 2020	MOS	P	1,000	$12.81	$12,810	21,062 Direct	+4.98%	Acquired	78.6% (price as of 2026-08-20)
March 5, 2020	MOS	A	18,530	—	—	18,530 Direct	—	Acquired	(price as of 2026-08-20)
May 10, 2019	MOS	P	1,000	$23.55	$23,550	20,062 Direct	+5.25%	Acquired	-2.8% (price as of 2026-08-20)
March 7, 2019	MOS	A	10,148	—	—	10,148 Direct	—	Acquired	(price as of 2026-08-20)
March 3, 2019	MOS	A	6,540	—	—	21,064 Direct	+45.03%	Acquired	(price as of 2026-08-20)
March 3, 2019	MOS	F	2,002	$31.00	$62,062	19,062 Direct	-9.50%	Disposed	-26.2% (price as of 2026-08-20)
March 8, 2018	MOS	A	9,772	—	—	9,772 Direct	—	Acquired	(price as of 2026-08-20)
March 5, 2018	MOS	A	660	—	—	14,726 Direct	+4.69%	Acquired	(price as of 2026-08-20)
March 5, 2018	MOS	F	202	$27.98	$5,652	14,524 Direct	-1.37%	Disposed	-18.2% (price as of 2026-08-20)
March 5, 2018	MOS	A	660	—	—	660 Direct	—	Acquired	(price as of 2026-08-20)
March 7, 2017	MOS	A	570	—	—	13,458 Direct	+4.42%	Acquired	(price as of 2026-08-20)
March 7, 2017	MOS	M	1,877	—	—	15,335 Direct	+13.95%	Acquired	(price as of 2026-08-20)
March 7, 2017	MOS	F	1,269	$29.18	$37,029	14,066 Direct	-8.28%	Disposed	-21.6% (price as of 2026-08-20)
March 7, 2017	MOS	M	1,877	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 2, 2017	MOS	A	20,182	—	—	20,182 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 24, 2017	MOS	A	4,270	—	—	15,178 Direct	+39.15%	Acquired	(price as of 2026-08-20)
Feb. 24, 2017	MOS	F	2,290	—	—	12,888 Direct	-15.09%	Disposed	(price as of 2026-08-20)
July 18, 2016	MOS	M	1,666	—	—	11,493 Direct	+16.95%	Acquired	(price as of 2026-08-20)
July 18, 2016	MOS	A	384	—	—	11,877 Direct	+3.34%	Acquired	(price as of 2026-08-20)
July 18, 2016	MOS	F	969	$29.28	$28,372	10,908 Direct	-8.16%	Disposed	-21.9% (price as of 2026-08-20)
July 18, 2016	MOS	M	1,666	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 3, 2016	MOS	A	19,912	—	—	19,912 Direct	—	Acquired	(price as of 2026-08-20)
March 3, 2016	MOS	A	18,539	—	—	18,539 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 18, 2016	MOS	P	1,000	$25.35	$25,350	9,827 Direct	+11.33%	Acquired	-9.7% (price as of 2026-08-20)
July 19, 2015	MOS	M	1,620	—	—	8,972 Direct	+22.03%	Acquired	(price as of 2026-08-20)
July 19, 2015	MOS	A	603	—	—	9,575 Direct	+6.72%	Acquired	(price as of 2026-08-20)
July 19, 2015	MOS	F	748	$45.26	$33,854	8,827 Direct	-7.81%	Disposed	-49.4% (price as of 2026-08-20)
July 19, 2015	MOS	M	1,620	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 5, 2015	MOS	A	7,461	—	—	7,461 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 13, 2015	MOS	M	6,281	$15.45	$97,041	10,962 Direct	+134.18%	Acquired	48.1% (price as of 2026-08-20)
Feb. 13, 2015	MOS	S	3,610	$52.19	$188,406	7,352 Direct	-32.93%	Disposed	-56.2% (price as of 2026-08-20)
Feb. 13, 2015	MOS	M	6,281	—	—	0 Direct	-100.00%	Disposed	(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
April 18, 2022	MOS	Stock Option (Right to Buy)	Common Stock (7,461)	$50.43	March 5, 2025	7,461	Disposed
March 7, 2022	MOS	Restricted Stock Units	Common Stock (10,148)	—	—	10,148	Disposed
March 3, 2022	MOS	Restricted Stock Units	Common Stock (9,342)	—	—	9,342	Acquired
Feb. 8, 2022	MOS	Stock Option (Right to Buy)	Common Stock (19,912)	$28.49	March 3, 2026	19,912	Disposed
Feb. 8, 2022	MOS	Stock Option (Right to Buy)	Common Stock (20,182)	$30.42	March 2, 2027	20,182	Disposed
March 8, 2021	MOS	Restricted Stock Units	Common Stock (9,772)	—	—	9,772	Disposed
March 4, 2021	MOS	Restricted Stock Units	Common Stock (13,527)	—	—	13,527	Acquired
March 5, 2020	MOS	Restricted Stock Units	Common Stock (18,530)	—	—	18,530	Acquired
March 7, 2019	MOS	Restricted Stock Units	Common Stock (10,148)	—	—	10,148	Acquired
March 8, 2018	MOS	Restricted Stock Units	Common Stock (9,772)	—	—	9,772	Acquired
March 5, 2018	MOS	Phantom Stock	Common Stock (660)	—	—	660	Acquired
March 7, 2017	MOS	Restricted Stock Units	Common Stock (1,877)	—	—	1,877	Disposed
March 2, 2017	MOS	Stock Option (Right to Buy)	Common Stock (20,182)	$30.42	March 2, 2027	20,182	Acquired
July 18, 2016	MOS	Restricted Stock Units	Common Stock (1,666)	—	—	1,666	Disposed
March 3, 2016	MOS	Stock Option (Right to Buy)	Common Stock (19,912)	$28.49	March 3, 2026	19,912	Acquired
March 3, 2016	MOS	Stock Option (Right to Buy)	Common Stock (18,539)	$28.49	March 3, 2026	18,539	Acquired
July 19, 2015	MOS	Restricted Stock Units	Common Stock (1,620)	—	—	1,620	Disposed
March 5, 2015	MOS	Stock Option (Right to Buy)	Common Stock (7,461)	$50.43	March 5, 2025	7,461	Acquired
Feb. 13, 2015	MOS	Stock Option (Right to Buy)	Common Stock (6,281)	$15.45	Aug. 4, 2016	6,281	Disposed

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

Initial ownership (Form 3) 10 holdings

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

Date	Ticker	Security	Shares	Ownership
Aug. 22, 2014	MOS	Common Stock	4,681	Direct
Aug. 22, 2014	MOS	Stock Option (Right to Buy)→ Common Stock (6,281)	6,281	Direct
Aug. 22, 2014	MOS	Stock Option (Right to Buy)→ Common Stock (4,693)	4,693	Direct
Aug. 22, 2014	MOS	Stock Option (Right to Buy)→ Common Stock (1,152)	1,152	Direct
Aug. 22, 2014	MOS	Stock Option (Right to Buy)→ Common Stock (2,246)	2,246	Direct
Aug. 22, 2014	MOS	Stock Option (Right to Buy)→ Common Stock (2,598)	2,598	Direct
Aug. 22, 2014	MOS	Stock Option (Right to Buy)→ Common Stock (1,480)	1,480	Direct
Aug. 22, 2014	MOS	Restricted Stock Units→ Common Stock (1,620)	1,620	Direct
Aug. 22, 2014	MOS	Restricted Stock Units→ Common Stock (1,666)	1,666	Direct
Aug. 22, 2014	MOS	Restricted Stock Units→ Common Stock (1,877)	1,877	Direct