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Simon Cheng
Insider
First SEC filing: March 18, 2016 · Latest: March 18, 2016
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
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| March 16, 2016 | EFOI | A | 2,330 | · | · | 2,330 Direct | · | Acquired | (price as of 2026-10-02) |
| March 16, 2016 | EFOI | A | 3,150 | $6.77 | $21,326 | 3,150 Direct | · | Acquired | -98.7% (price as of 2026-10-02) |
| March 16, 2015 | EFOI | A | 7,500 | · | · | 7,500 Direct | · | Acquired | (price as of 2026-10-02) |
| Jan. 28, 2014 | EFOI | A | 50,000 | · | · | 50,000 Direct | · | Acquired | (price as of 2026-10-02) |
| July 31, 2012 | EFOI | A | 10,000 | · | · | 10,000 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 |
|---|---|---|---|---|---|---|---|
| March 16, 2016 | EFOI | Restricted Stock Units | Common Stock | · | March 17, 2019 | 2,330 | Acquired |
| March 16, 2016 | EFOI | Stock Option | Common Stock | $6.77 | March 16, 2026 | 3,150 | Acquired |
| March 16, 2015 | EFOI | Stock Option | Common Stock | $5.47 | March 16, 2025 | 7,500 | Acquired |
| Jan. 28, 2014 | EFOI | Stock option | Common Stock | $0.41 | Jan. 28, 2024 | 50,000 | Acquired |
| July 31, 2012 | EFOI | Common Stock Option | Common Stock | $0.26 | July 31, 2022 | 10,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).