Mark C Williamson
Insider
First SEC filing: Aug. 26, 2010 · Latest: Aug. 26, 2010
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 |
|---|---|---|---|---|---|---|---|---|---|
| June 10, 2022 | OESX | A | 22,935 | · | · | 157,676 Direct | +17.02% | Acquired | (price as of 2026-10-02) |
| June 4, 2021 | OESX | A | 5,016 | · | · | 134,741 Direct | +3.87% | Acquired | (price as of 2026-10-02) |
| June 9, 2020 | OESX | A | 6,887 | · | · | 129,725 Direct | +5.61% | Acquired | (price as of 2026-10-02) |
| Aug. 12, 2019 | OESX | A | 9,033 | · | · | 122,838 Direct | +7.94% | Acquired | (price as of 2026-10-02) |
| June 8, 2018 | OESX | P | 9,000 | $0.88 | $7,920 | 113,805 Direct | +8.59% | Acquired | 245.9% (price as of 2026-10-02) |
| June 7, 2018 | OESX | A | 20,250 | · | · | 104,805 Direct | +23.95% | Acquired | (price as of 2026-10-02) |
| June 13, 2017 | OESX | A | 17,609 | · | · | 84,555 Direct | +26.30% | Acquired | (price as of 2026-10-02) |
| Aug. 5, 2016 | OESX | A | 19,014 | · | · | 66,946 Direct | +39.67% | Acquired | (price as of 2026-10-02) |
| May 26, 2015 | OESX | A | 12,217 | · | · | 47,932 Direct | +34.21% | Acquired | (price as of 2026-10-02) |
| May 16, 2014 | OESX | P | 5,000 | $4.22 | $21,100 | 35,715 Direct | +16.28% | Acquired | -27.9% (price as of 2026-10-02) |
| May 15, 2014 | OESX | A | 10,715 | · | · | 30,715 Direct | +53.57% | Acquired | (price as of 2026-10-02) |
| May 28, 2013 | OESX | A | 36,568 | · | · | 36,568 Direct | · | Acquired | (price as of 2026-10-02) |
| Nov. 13, 2012 | OESX | P | 10,000 | $1.65 | $16,500 | 20,000 Direct | +100.00% | Acquired | 84.5% (price as of 2026-10-02) |
| June 12, 2012 | OESX | A | 26,646 | · | · | 26,646 Direct | · | Acquired | (price as of 2026-10-02) |
| May 23, 2011 | OESX | A | 22,045 | · | · | 22,045 Direct | · | Acquired | (price as of 2026-10-02) |
| Aug. 26, 2010 | OESX | P | 10,000 | $2.21 | $22,100 | 10,000 Direct | · | Acquired | 37.7% (price as of 2026-10-02) |
| May 18, 2010 | OESX | A | 19,912 | · | · | 19,912 Direct | · | Acquired | (price as of 2026-10-02) |
| May 19, 2009 | OESX | A | 10,583 | · | · | 10,583 Direct | · | Acquired | (price as of 2026-10-02) |
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 |
|---|---|---|---|---|---|---|---|
| May 28, 2013 | OESX | Stock Options (right to buy) | Common Stock | $2.41 | May 28, 2023 | 36,568 | Acquired |
| June 12, 2012 | OESX | Stock Options (right to buy) | Common Stock | $2.03 | June 12, 2022 | 26,646 | Acquired |
| May 23, 2011 | OESX | Stock Options (right to buy) | Common Stock | $4.19 | May 23, 2021 | 22,045 | Acquired |
| May 18, 2010 | OESX | Stock Options (right to buy) | Common Stock | $3.46 | May 18, 2020 | 19,912 | Acquired |
| May 19, 2009 | OESX | Stock Options (right to buy) | Common Stock | $3.78 | May 19, 2019 | 10,583 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).