Mark J. Isaacson
Insider
First SEC filing: Aug. 22, 2014 · Latest: Aug. 22, 2014
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net: $0
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| 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 | -57.8% (price as of 2026-10-05) |
| April 18, 2022 | MOS | S 10b5-1 | 14,461 | $76.02 | $1,099,325 | 45,869 Direct | -23.97% | Disposed | -72.0% (price as of 2026-10-05) |
| April 18, 2022 | MOS | M | 7,461 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| March 7, 2022 | MOS | M | 10,148 | · | · | 48,291 Direct | +26.61% | Acquired | (price as of 2026-10-05) |
| March 7, 2022 | MOS | M | 16,924 | · | · | 65,215 Direct | +35.05% | Acquired | (price as of 2026-10-05) |
| March 7, 2022 | MOS | F | 12,346 | $61.14 | $754,834 | 52,869 Direct | -18.93% | Disposed | -65.2% (price as of 2026-10-05) |
| March 7, 2022 | MOS | M | 10,148 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| March 3, 2022 | MOS | A | 9,342 | · | · | 9,342 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 8, 2022 | MOS | M 10b5-1 | 19,912 | $28.49 | $567,293 | 58,055 Direct | +52.20% | Acquired | -25.3% (price as of 2026-10-05) |
| Feb. 8, 2022 | MOS | S 10b5-1 | 19,912 | $45.00 | $896,040 | 38,143 Direct | -34.30% | Disposed | -52.7% (price as of 2026-10-05) |
| Feb. 8, 2022 | MOS | M 10b5-1 | 20,182 | $30.42 | $613,936 | 58,325 Direct | +52.91% | Acquired | -30.0% (price as of 2026-10-05) |
| Feb. 8, 2022 | MOS | S 10b5-1 | 20,182 | $45.00 | $908,190 | 38,143 Direct | -34.60% | Disposed | -52.7% (price as of 2026-10-05) |
| Feb. 8, 2022 | MOS | M | 19,912 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Feb. 8, 2022 | MOS | M | 20,182 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| March 8, 2021 | MOS | M | 9,772 | · | · | 31,834 Direct | +44.29% | Acquired | (price as of 2026-10-05) |
| March 8, 2021 | MOS | A | 19,791 | · | · | 51,625 Direct | +62.17% | Acquired | (price as of 2026-10-05) |
| March 8, 2021 | MOS | F | 13,482 | $30.70 | $413,897 | 38,143 Direct | -26.12% | Disposed | -30.7% (price as of 2026-10-05) |
| March 8, 2021 | MOS | M | 9,772 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| March 4, 2021 | MOS | A | 13,527 | · | · | 13,527 Direct | · | Acquired | (price as of 2026-10-05) |
| March 17, 2020 | MOS | P | 1,000 | $9.66 | $9,660 | 22,062 Direct | +4.75% | Acquired | 120.4% (price as of 2026-10-05) |
| March 9, 2020 | MOS | P | 1,000 | $12.81 | $12,810 | 21,062 Direct | +4.98% | Acquired | 66.2% (price as of 2026-10-05) |
| March 5, 2020 | MOS | A | 18,530 | · | · | 18,530 Direct | · | Acquired | (price as of 2026-10-05) |
| May 10, 2019 | MOS | P | 1,000 | $23.55 | $23,550 | 20,062 Direct | +5.25% | Acquired | -9.6% (price as of 2026-10-05) |
| March 7, 2019 | MOS | A | 10,148 | · | · | 10,148 Direct | · | Acquired | (price as of 2026-10-05) |
| March 3, 2019 | MOS | A | 6,540 | · | · | 21,064 Direct | +45.03% | Acquired | (price as of 2026-10-05) |
| March 3, 2019 | MOS | F | 2,002 | $31.00 | $62,062 | 19,062 Direct | -9.50% | Disposed | -31.3% (price as of 2026-10-05) |
| March 8, 2018 | MOS | A | 9,772 | · | · | 9,772 Direct | · | Acquired | (price as of 2026-10-05) |
| March 5, 2018 | MOS | A | 660 | · | · | 14,726 Direct | +4.69% | Acquired | (price as of 2026-10-05) |
| March 5, 2018 | MOS | F | 202 | $27.98 | $5,652 | 14,524 Direct | -1.37% | Disposed | -23.9% (price as of 2026-10-05) |
| March 5, 2018 | MOS | A | 660 | · | · | 660 Direct | · | Acquired | (price as of 2026-10-05) |
| March 7, 2017 | MOS | A | 570 | · | · | 13,458 Direct | +4.42% | Acquired | (price as of 2026-10-05) |
| March 7, 2017 | MOS | M | 1,877 | · | · | 15,335 Direct | +13.95% | Acquired | (price as of 2026-10-05) |
| March 7, 2017 | MOS | F | 1,269 | $29.18 | $37,029 | 14,066 Direct | -8.28% | Disposed | -27.0% (price as of 2026-10-05) |
| March 7, 2017 | MOS | M | 1,877 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| March 2, 2017 | MOS | A | 20,182 | · | · | 20,182 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 24, 2017 | MOS | A | 4,270 | · | · | 15,178 Direct | +39.15% | Acquired | (price as of 2026-10-05) |
| Feb. 24, 2017 | MOS | F | 2,290 | · | · | 12,888 Direct | -15.09% | Disposed | (price as of 2026-10-05) |
| July 18, 2016 | MOS | M | 1,666 | · | · | 11,493 Direct | +16.95% | Acquired | (price as of 2026-10-05) |
| July 18, 2016 | MOS | A | 384 | · | · | 11,877 Direct | +3.34% | Acquired | (price as of 2026-10-05) |
| July 18, 2016 | MOS | F | 969 | $29.28 | $28,372 | 10,908 Direct | -8.16% | Disposed | -27.3% (price as of 2026-10-05) |
| July 18, 2016 | MOS | M | 1,666 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| March 3, 2016 | MOS | A | 19,912 | · | · | 19,912 Direct | · | Acquired | (price as of 2026-10-05) |
| March 3, 2016 | MOS | A | 18,539 | · | · | 18,539 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 18, 2016 | MOS | P | 1,000 | $25.35 | $25,350 | 9,827 Direct | +11.33% | Acquired | -16.0% (price as of 2026-10-05) |
| July 19, 2015 | MOS | M | 1,620 | · | · | 8,972 Direct | +22.03% | Acquired | (price as of 2026-10-05) |
| July 19, 2015 | MOS | A | 603 | · | · | 9,575 Direct | +6.72% | Acquired | (price as of 2026-10-05) |
| July 19, 2015 | MOS | F | 748 | $45.26 | $33,854 | 8,827 Direct | -7.81% | Disposed | -53.0% (price as of 2026-10-05) |
| July 19, 2015 | MOS | M | 1,620 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| March 5, 2015 | MOS | A | 7,461 | · | · | 7,461 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 13, 2015 | MOS | M | 6,281 | $15.45 | $97,041 | 10,962 Direct | +134.18% | Acquired | 37.8% (price as of 2026-10-05) |
| Feb. 13, 2015 | MOS | S | 3,610 | $52.19 | $188,406 | 7,352 Direct | -32.93% | Disposed | -59.2% (price as of 2026-10-05) |
| Feb. 13, 2015 | MOS | M | 6,281 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
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 | $50.43 | March 5, 2025 | 7,461 | Disposed |
| March 7, 2022 | MOS | Restricted Stock Units | Common Stock | · | · | 10,148 | Disposed |
| March 3, 2022 | MOS | Restricted Stock Units | Common Stock | · | · | 9,342 | Acquired |
| Feb. 8, 2022 | MOS | Stock Option (Right to Buy) | Common Stock | $28.49 | March 3, 2026 | 19,912 | Disposed |
| Feb. 8, 2022 | MOS | Stock Option (Right to Buy) | Common Stock | $30.42 | March 2, 2027 | 20,182 | Disposed |
| March 8, 2021 | MOS | Restricted Stock Units | Common Stock | · | · | 9,772 | Disposed |
| March 4, 2021 | MOS | Restricted Stock Units | Common Stock | · | · | 13,527 | Acquired |
| March 5, 2020 | MOS | Restricted Stock Units | Common Stock | · | · | 18,530 | Acquired |
| March 7, 2019 | MOS | Restricted Stock Units | Common Stock | · | · | 10,148 | Acquired |
| March 8, 2018 | MOS | Restricted Stock Units | Common Stock | · | · | 9,772 | Acquired |
| March 5, 2018 | MOS | Phantom Stock | Common Stock | · | · | 660 | Acquired |
| March 7, 2017 | MOS | Restricted Stock Units | Common Stock | · | · | 1,877 | Disposed |
| March 2, 2017 | MOS | Stock Option (Right to Buy) | Common Stock | $30.42 | March 2, 2027 | 20,182 | Acquired |
| July 18, 2016 | MOS | Restricted Stock Units | Common Stock | · | · | 1,666 | Disposed |
| March 3, 2016 | MOS | Stock Option (Right to Buy) | Common Stock | $28.49 | March 3, 2026 | 19,912 | Acquired |
| March 3, 2016 | MOS | Stock Option (Right to Buy) | Common Stock | $28.49 | March 3, 2026 | 18,539 | Acquired |
| July 19, 2015 | MOS | Restricted Stock Units | Common Stock | · | · | 1,620 | Disposed |
| March 5, 2015 | MOS | Stock Option (Right to Buy) | Common Stock | $50.43 | March 5, 2025 | 7,461 | Acquired |
| Feb. 13, 2015 | MOS | Stock Option (Right to Buy) | Common Stock | $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) | 6,281 | Direct |
| Aug. 22, 2014 | MOS | Stock Option (Right to Buy) | 4,693 | Direct |
| Aug. 22, 2014 | MOS | Stock Option (Right to Buy) | 1,152 | Direct |
| Aug. 22, 2014 | MOS | Stock Option (Right to Buy) | 2,246 | Direct |
| Aug. 22, 2014 | MOS | Stock Option (Right to Buy) | 2,598 | Direct |
| Aug. 22, 2014 | MOS | Stock Option (Right to Buy) | 1,480 | Direct |
| Aug. 22, 2014 | MOS | Restricted Stock Units | 1,620 | Direct |
| Aug. 22, 2014 | MOS | Restricted Stock Units | 1,666 | Direct |
| Aug. 22, 2014 | MOS | Restricted Stock Units | 1,877 | Direct |