William Yeung
Insider
First SEC filing: June 24, 2016 · Latest: June 24, 2016
Insider at
Insider transactions
0 buys (P)
10 sells (S)
Net: $-501,684
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 |
|---|---|---|---|---|---|---|---|---|---|
| July 28, 2026 | ERII | S 10b5-1 | 2,048 | $8.56 | $17,531 | 99,291 Direct | -2.02% | Disposed | -20.9% (price as of 2026-10-02) |
| July 27, 2026 | ERII | F | 2,828 | $8.42 | $23,812 | 101,339 Direct | -2.71% | Disposed | -19.6% (price as of 2026-10-02) |
| Feb. 17, 2026 | ERII | A | 25,959 | · | · | 104,167 Direct | +33.19% | Acquired | (price as of 2026-10-02) |
| Feb. 6, 2026 | ERII | S 10b5-1 | 646 | $15.14 | $9,780 | 78,208 Direct | -0.82% | Disposed | -55.3% (price as of 2026-10-02) |
| Feb. 5, 2026 | ERII | S 10b5-1 | 890 | $14.59 | $12,985 | 78,854 Direct | -1.12% | Disposed | -53.6% (price as of 2026-10-02) |
| Feb. 2, 2026 | ERII | S 10b5-1 | 729 | $14.46 | $10,541 | 79,744 Direct | -0.91% | Disposed | -53.2% (price as of 2026-10-02) |
| Jan. 30, 2026 | ERII | F | 1,003 | $14.65 | $14,694 | 89,095 Direct | -1.11% | Disposed | -53.8% (price as of 2026-10-02) |
| Jan. 30, 2026 | ERII | F | 8,622 | $14.30 | $123,295 | 80,473 Direct | -9.68% | Disposed | -52.7% (price as of 2026-10-02) |
| Jan. 28, 2026 | ERII | S 10b5-1 | 7,271 | $14.55 | $105,793 | 90,098 Direct | -7.47% | Disposed | -53.5% (price as of 2026-10-02) |
| Oct. 24, 2025 | ERII | M | 5,638 | $10.19 | $57,451 | 103,007 Direct | +5.79% | Acquired | -33.6% (price as of 2026-10-02) |
| Oct. 24, 2025 | ERII | S 10b5-1 | 5,638 | $18.00 | $101,484 | 97,369 Direct | -5.47% | Disposed | -62.4% (price as of 2026-10-02) |
| Oct. 24, 2025 | ERII | M | 3,530 | $7.50 | $26,475 | 100,899 Direct | +3.63% | Acquired | -9.7% (price as of 2026-10-02) |
| Oct. 24, 2025 | ERII | S 10b5-1 | 3,530 | $18.00 | $63,540 | 97,369 Direct | -3.50% | Disposed | -62.4% (price as of 2026-10-02) |
| Oct. 24, 2025 | ERII | M | 5,638 | $10.19 | $57,451 | 16,229 Direct | -25.78% | Disposed | -33.6% (price as of 2026-10-02) |
| Oct. 24, 2025 | ERII | M | 3,530 | $7.50 | $26,475 | 14,120 Direct | -20.00% | Disposed | -9.7% (price as of 2026-10-02) |
| Oct. 23, 2025 | ERII | M | 3,530 | $7.50 | $26,475 | 100,899 Direct | +3.63% | Acquired | -9.7% (price as of 2026-10-02) |
| Oct. 23, 2025 | ERII | S 10b5-1 | 3,530 | $17.50 | $61,775 | 97,369 Direct | -3.50% | Disposed | -61.3% (price as of 2026-10-02) |
| Oct. 23, 2025 | ERII | M | 3,530 | $7.50 | $26,475 | 17,650 Direct | -16.67% | Disposed | -9.7% (price as of 2026-10-02) |
| Oct. 20, 2025 | ERII | M | 3,530 | $7.50 | $26,475 | 100,899 Direct | +3.63% | Acquired | -9.7% (price as of 2026-10-02) |
| Oct. 20, 2025 | ERII | S 10b5-1 | 3,530 | $17.00 | $60,010 | 97,369 Direct | -3.50% | Disposed | -60.2% (price as of 2026-10-02) |
| Oct. 20, 2025 | ERII | M | 3,530 | $7.50 | $26,475 | 21,180 Direct | -14.29% | Disposed | -9.7% (price as of 2026-10-02) |
| Oct. 16, 2025 | ERII | M | 3,530 | $7.50 | $26,475 | 100,899 Direct | +3.63% | Acquired | -9.7% (price as of 2026-10-02) |
| Oct. 16, 2025 | ERII | S 10b5-1 | 3,530 | $16.50 | $58,245 | 97,369 Direct | -3.50% | Disposed | -59.0% (price as of 2026-10-02) |
| Oct. 16, 2025 | ERII | M | 3,530 | $7.50 | $26,475 | 24,710 Direct | -12.50% | Disposed | -9.7% (price as of 2026-10-02) |
| Oct. 3, 2025 | ERII | M | 1,038 | $7.50 | $7,785 | 98,407 Direct | +1.07% | Acquired | -9.7% (price as of 2026-10-02) |
| Oct. 3, 2025 | ERII | S 10b5-1 | 1,038 | $16.00 | $16,608 | 97,369 Direct | -1.05% | Disposed | -57.7% (price as of 2026-10-02) |
| Oct. 3, 2025 | ERII | M | 2,529 | $7.50 | $18,968 | 99,898 Direct | +2.60% | Acquired | -9.7% (price as of 2026-10-02) |
| Oct. 3, 2025 | ERII | S 10b5-1 | 2,529 | $16.00 | $40,464 | 97,369 Direct | -2.53% | Disposed | -57.7% (price as of 2026-10-02) |
| Oct. 3, 2025 | ERII | M | 1,038 | $7.50 | $7,785 | 30,769 Direct | -3.26% | Disposed | -9.7% (price as of 2026-10-02) |
| Oct. 3, 2025 | ERII | M | 2,529 | $7.50 | $18,968 | 28,240 Direct | -8.22% | Disposed | -9.7% (price as of 2026-10-02) |
| Sept. 18, 2025 | ERII | M | 15,454 | $8.95 | $138,313 | 112,823 Direct | +15.87% | Acquired | -24.4% (price as of 2026-10-02) |
| Sept. 18, 2025 | ERII | S 10b5-1 | 15,454 | $15.09 | $233,201 | 97,369 Direct | -13.70% | Disposed | -55.1% (price as of 2026-10-02) |
| Sept. 18, 2025 | ERII | M | 15,454 | $8.95 | $138,313 | 0 Direct | -100.00% | Disposed | -24.4% (price as of 2026-10-02) |
| Sept. 11, 2025 | ERII | M | 30,877 | $8.95 | $276,349 | 130,923 Direct | +30.86% | Acquired | -24.4% (price as of 2026-10-02) |
| Sept. 11, 2025 | ERII | S 10b5-1 | 33,554 | $14.51 | $486,869 | 97,369 Direct | -25.63% | Disposed | -53.3% (price as of 2026-10-02) |
| Sept. 11, 2025 | ERII | M | 30,877 | $8.95 | $276,349 | 15,454 Direct | -66.64% | Disposed | -24.4% (price as of 2026-10-02) |
| July 25, 2025 | ERII | F | 1,989 | $13.88 | $27,607 | 100,046 Direct | -1.95% | Disposed | -51.2% (price as of 2026-10-02) |
| March 10, 2025 | ERII | F | 944 | $16.37 | $15,453 | 102,035 Direct | -0.92% | Disposed | -58.6% (price as of 2026-10-02) |
| Feb. 3, 2025 | ERII | F | 882 | $14.34 | $12,648 | 102,979 Direct | -0.85% | Disposed | -52.8% (price as of 2026-10-02) |
| Jan. 31, 2025 | ERII | F | 627 | $14.56 | $9,129 | 103,861 Direct | -0.60% | Disposed | -53.5% (price as of 2026-10-02) |
| Jan. 30, 2025 | ERII | F | 698 | $14.33 | $10,002 | 104,488 Direct | -0.66% | Disposed | -52.8% (price as of 2026-10-02) |
| Jan. 27, 2025 | ERII | F | 4,061 | $14.40 | $58,478 | 105,186 Direct | -3.72% | Disposed | -53.0% (price as of 2026-10-02) |
| Jan. 23, 2025 | ERII | A | 23,956 | · | · | 109,247 Direct | +28.09% | Acquired | (price as of 2026-10-02) |
| July 29, 2024 | ERII | S | 2,012 | $14.63 | $29,436 | 85,291 Direct | -2.30% | Disposed | -53.7% (price as of 2026-10-02) |
| March 11, 2024 | ERII | S | 978 | $14.98 | $14,650 | 87,303 Direct | -1.11% | Disposed | -54.8% (price as of 2026-10-02) |
| Feb. 5, 2024 | ERII | S | 1,013 | $14.89 | $15,084 | 88,281 Direct | -1.13% | Disposed | -54.5% (price as of 2026-10-02) |
| Feb. 2, 2024 | ERII | S | 1,400 | $15.30 | $21,420 | 89,294 Direct | -1.54% | Disposed | -55.8% (price as of 2026-10-02) |
| Feb. 1, 2024 | ERII | S | 733 | $15.64 | $11,464 | 90,694 Direct | -0.80% | Disposed | -56.7% (price as of 2026-10-02) |
| Jan. 30, 2024 | ERII | S | 823 | $15.91 | $13,094 | 91,427 Direct | -0.89% | Disposed | -57.4% (price as of 2026-10-02) |
| Jan. 25, 2024 | ERII | A | 39,542 | · | · | 92,250 Direct | +75.02% | Acquired | (price as of 2026-10-02) |
| Aug. 28, 2023 | ERII | S | 40,614 | $27.75 | $1,127,038 | 52,708 Direct | -43.52% | Disposed | -75.6% (price as of 2026-10-02) |
| July 25, 2023 | ERII | A | 16,674 | · | · | 93,322 Direct | +21.75% | Acquired | (price as of 2026-10-02) |
| March 9, 2023 | ERII | S | 882 | $23.99 | $21,159 | 76,648 Direct | -1.14% | Disposed | -71.8% (price as of 2026-10-02) |
| Feb. 3, 2023 | ERII | S | 836 | $22.75 | $19,019 | 77,530 Direct | -1.07% | Disposed | -70.2% (price as of 2026-10-02) |
| Feb. 2, 2023 | ERII | S | 2,913 | $22.57 | $65,746 | 78,366 Direct | -3.58% | Disposed | -70.0% (price as of 2026-10-02) |
| Feb. 1, 2023 | ERII | S | 794 | $21.79 | $17,301 | 81,279 Direct | -0.97% | Disposed | -68.9% (price as of 2026-10-02) |
| Jan. 30, 2023 | ERII | A | 7,006 | $21.41 | $149,998 | 82,073 Direct | +9.33% | Acquired | -68.4% (price as of 2026-10-02) |
| June 15, 2022 | ERII | S | 2,500 | $19.07 | $47,675 | 5,568 Indirect | -30.99% | Disposed | -64.5% (price as of 2026-10-02) |
| March 7, 2022 | ERII | A | 7,911 | $18.96 | $149,993 | 75,067 Direct | +11.78% | Acquired | -64.3% (price as of 2026-10-02) |
| Feb. 2, 2022 | ERII | F | 2,445 | $19.65 | $48,044 | 67,156 Direct | -3.51% | Disposed | -65.5% (price as of 2026-10-02) |
| Feb. 1, 2022 | ERII | F | 3,132 | $19.57 | $61,293 | 69,601 Direct | -4.31% | Disposed | -65.4% (price as of 2026-10-02) |
| Jan. 28, 2022 | ERII | A | 7,898 | · | · | 72,733 Direct | +12.18% | Acquired | (price as of 2026-10-02) |
| Jan. 28, 2022 | ERII | A | 20,293 | $18.99 | $385,364 | 20,293 Direct | · | Acquired | -64.3% (price as of 2026-10-02) |
| Feb. 3, 2021 | ERII | F | 1,182 | $13.81 | $16,323 | 64,835 Direct | -1.79% | Disposed | -51.0% (price as of 2026-10-02) |
| Feb. 2, 2021 | ERII | F | 4,878 | $13.97 | $68,146 | 66,017 Direct | -6.88% | Disposed | -51.5% (price as of 2026-10-02) |
| Feb. 1, 2021 | ERII | A | 9,849 | $13.96 | $137,492 | 70,895 Direct | +16.13% | Acquired | -51.5% (price as of 2026-10-02) |
| Feb. 1, 2021 | ERII | A | 26,336 | · | · | 26,336 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 4, 2020 | ERII | F | 3,272 | $10.41 | $34,062 | 61,046 Direct | -5.09% | Disposed | -35.0% (price as of 2026-10-02) |
| Feb. 3, 2020 | ERII | F | 1,851 | $10.24 | $18,954 | 64,318 Direct | -2.80% | Disposed | -33.9% (price as of 2026-10-02) |
| Jan. 31, 2020 | ERII | A | 13,467 | $10.21 | $137,498 | 66,169 Direct | +25.55% | Acquired | -33.7% (price as of 2026-10-02) |
| Jan. 31, 2020 | ERII | A | 23,027 | · | · | 23,027 Direct | · | Acquired | (price as of 2026-10-02) |
| Sept. 23, 2019 | ERII | F | 4,005 | $9.72 | $38,929 | 52,702 Direct | -7.06% | Disposed | -30.3% (price as of 2026-10-02) |
| Feb. 5, 2019 | ERII | F | 1,415 | $7.72 | $10,924 | 56,707 Direct | -2.43% | Disposed | -12.3% (price as of 2026-10-02) |
| Feb. 5, 2019 | ERII | F | 1,415 | $7.72 | $10,924 | 56,707 Direct | -2.43% | Disposed | -12.3% (price as of 2026-10-02) |
| Feb. 4, 2019 | ERII | F | 1,952 | $7.67 | $14,972 | 58,122 Direct | -3.25% | Disposed | -11.7% (price as of 2026-10-02) |
| Feb. 4, 2019 | ERII | F | 1,952 | $7.67 | $14,972 | 58,122 Direct | -3.25% | Disposed | -11.7% (price as of 2026-10-02) |
| Jan. 31, 2019 | ERII | A | 18,092 | $7.60 | $137,499 | 60,074 Direct | +43.09% | Acquired | -10.9% (price as of 2026-10-02) |
| Jan. 31, 2019 | ERII | A | 30,293 | · | · | 30,293 Direct | · | Acquired | (price as of 2026-10-02) |
| Jan. 31, 2019 | ERII | A | 18,092 | $7.60 | $137,499 | 60,074 Direct | +43.09% | Acquired | -10.9% (price as of 2026-10-02) |
| Jan. 31, 2019 | ERII | A | 30,239 | $7.60 | $229,816 | 30,239 Direct | · | Acquired | -10.9% (price as of 2026-10-02) |
| March 21, 2018 | ERII | A | 11,572 | · | · | 41,982 Direct | +38.05% | Acquired | (price as of 2026-10-02) |
| Feb. 5, 2018 | ERII | F | 1,417 | $7.72 | $10,939 | 30,410 Direct | -4.45% | Disposed | -12.3% (price as of 2026-10-02) |
| Feb. 1, 2018 | ERII | A | 18,333 | $7.50 | $137,498 | 31,827 Direct | +135.86% | Acquired | -9.7% (price as of 2026-10-02) |
| Feb. 1, 2018 | ERII | A | 31,807 | · | · | 31,807 Direct | · | Acquired | (price as of 2026-10-02) |
| March 14, 2017 | ERII | P | 3,298 | $7.58 | $24,999 | 8,068 Indirect | +69.14% | Acquired | -10.7% (price as of 2026-10-02) |
| Feb. 2, 2017 | ERII | A | 13,494 | $10.19 | $137,504 | 13,494 Direct | · | Acquired | -33.6% (price as of 2026-10-02) |
| Feb. 2, 2017 | ERII | A | 21,867 | · | · | 68,198 Direct | +47.20% | Acquired | (price as of 2026-10-02) |
| Nov. 8, 2016 | ERII | P | 4,770 | $10.10 | $48,177 | 4,770 Indirect | · | Acquired | -33.0% (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 |
|---|---|---|---|---|---|---|---|
| Oct. 24, 2025 | ERII | Employee Stock Option (Right to Buy) | Common Stock | $10.19 | Feb. 2, 2027 | 5,638 | Disposed |
| Oct. 24, 2025 | ERII | Employee Stock Option (Right to Buy) | Common Stock | $7.50 | Feb. 1, 2028 | 3,530 | Disposed |
| Oct. 23, 2025 | ERII | Employee Stock Option (Right to Buy) | Common Stock | $7.50 | Feb. 1, 2028 | 3,530 | Disposed |
| Oct. 20, 2025 | ERII | Employee Stock Option (Right to Buy) | Common Stock | $7.50 | Feb. 1, 2028 | 3,530 | Disposed |
| Oct. 16, 2025 | ERII | Employee Stock Option (Right to Buy) | Common Stock | $7.50 | Feb. 1, 2028 | 3,530 | Disposed |
| Oct. 3, 2025 | ERII | Employee Stock Option (Right to Buy) | Common Stock | $7.50 | Feb. 1, 2028 | 1,038 | Disposed |
| Oct. 3, 2025 | ERII | Employee Stock Option (Right to Buy) | Common Stock | $7.50 | Feb. 1, 2028 | 2,529 | Disposed |
| Sept. 18, 2025 | ERII | Employee Stock Option (Right to Buy) | Common Stock | $8.95 | June 19, 2026 | 15,454 | Disposed |
| Sept. 11, 2025 | ERII | Employee Stock Option (Right to Buy) | Common Stock | $8.95 | June 19, 2026 | 30,877 | Disposed |
| Jan. 28, 2022 | ERII | Employee Stock Option (Right to Buy) | Common Stock | $18.99 | Jan. 28, 2032 | 20,293 | Acquired |
| Feb. 1, 2021 | ERII | Employee Stock Option (Right to Buy) | Common Stock | $13.96 | Feb. 1, 2031 | 26,336 | Acquired |
| Jan. 31, 2020 | ERII | Employee Stock Option (Right to Buy) | Common Stock | $10.21 | Jan. 31, 2030 | 23,027 | Acquired |
| Jan. 31, 2019 | ERII | Employee Stock Option (Right to Buy) | Common Stock | $7.60 | Jan. 31, 2029 | 30,293 | Acquired |
| Jan. 31, 2019 | ERII | Employee Stock Option (Right to Buy) | Common Stock | $7.60 | Jan. 31, 2029 | 30,239 | Acquired |
| Feb. 1, 2018 | ERII | Employee Stock Option (Right to Buy) | Common Stock | $7.50 | Feb. 1, 2028 | 31,807 | Acquired |
| Feb. 2, 2017 | ERII | Stock Option (Right to Buy) | Common Stock | $10.19 | Feb. 2, 2027 | 21,867 | 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 |
|---|---|---|---|---|
| June 24, 2016 | ERII | Employee Stock Option (Right to Buy) | 46,331 | Direct |
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2022 | $320,409 | · | $299,976 | $150,006 | $213,447 | · | $27,147 | $1,010,984 |
| 2021 | $308,654 | · | $137,492 | $137,606 | $185,400 | · | $21,433 | $790,585 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.