Mike F Chang
CIK 1511393 · View on SEC EDGAR ↗
Insider
First SEC filing: July 1, 2011 · Latest: July 1, 2011
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.
- Compensation Executive pay disclosed in company proxy statements.
Insider at
Insider transactions
1 buys (P)
0 sells (S)
Net:
$640,813
+ 75 non-open-market transactions below
Avg return of open purchases vs now:
38.5%
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
75 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| March 9, 2026 | AOSL | P | 33,727 | $19.00 | $640,813 | 4,369,574 Direct | +0.78% | Acquired | 38.5% (price as of 2026-08-21) |
| Jan. 29, 2024 | AOSL | S 10b5-1 | 30,000 | $26.91 | $807,300 | 4,500,286 Direct | -0.66% | Disposed | -2.2% (price as of 2026-08-21) |
| Dec. 28, 2023 | AOSL | S 10b5-1 | 30,000 | $26.53 | $795,900 | 4,337,591 Direct | -0.69% | Disposed | -0.8% (price as of 2026-08-21) |
| Dec. 14, 2023 | AOSL | S 10b5-1 | 30,000 | $25.00 | $750,000 | 4,337,591 Direct | -0.69% | Disposed | 5.2% (price as of 2026-08-21) |
| Oct. 26, 2023 | AOSL | S 10b5-1 | 30,000 | $25.03 | $750,900 | 4,337,591 Direct | -0.69% | Disposed | 5.1% (price as of 2026-08-21) |
| Sept. 26, 2023 | AOSL | S 10b5-1 | 30,000 | $28.64 | $859,200 | 4,337,591 Direct | -0.69% | Disposed | -8.1% (price as of 2026-08-21) |
| Sept. 1, 2023 | AOSL | S 10b5-1 | 30,000 | $31.01 | $930,300 | 4,387,591 Direct | -0.68% | Disposed | -15.2% (price as of 2026-08-21) |
| Jan. 9, 2023 | AOSL | S 10b5-1 | 56,400 | $29.96 | $1,689,744 | 4,352,210 Direct | -1.28% | Disposed | -12.2% (price as of 2026-08-21) |
| March 17, 2022 | AOSL | S 10b5-1 | 56,400 | $55.00 | $3,102,000 | 4,392,210 Direct | -1.27% | Disposed | -52.2% (price as of 2026-08-21) |
| Jan. 12, 2021 | AOSL | S 10b5-1 | 20,000 | $28.89 | $577,800 | 4,213,597 Direct | -0.47% | Disposed | -8.9% (price as of 2026-08-21) |
| Jan. 11, 2021 | AOSL | S 10b5-1 | 5,434 | $28.00 | $152,152 | 4,233,597 Direct | -0.13% | Disposed | -6.0% (price as of 2026-08-21) |
| Jan. 8, 2021 | AOSL | S 10b5-1 | 6,979 | $28.23 | $197,017 | 4,239,031 Direct | -0.16% | Disposed | -6.8% (price as of 2026-08-21) |
| Jan. 7, 2021 | AOSL | S 10b5-1 | 29,143 | $28.43 | $828,535 | 4,246,010 Direct | -0.68% | Disposed | -7.5% (price as of 2026-08-21) |
| Jan. 6, 2021 | AOSL | S 10b5-1 | 88,444 | $28.05 | $2,480,854 | 4,275,153 Direct | -2.03% | Disposed | -6.2% (price as of 2026-08-21) |
| Oct. 5, 2020 | AOSL | S 10b5-1 | 94,000 | $15.50 | $1,457,000 | 4,428,597 Direct | -2.08% | Disposed | 69.7% (price as of 2026-08-21) |
| Jan. 3, 2019 | AOSL | P 10b5-1 | 480 | $9.99 | $4,795 | 4,273,197 Direct | +0.01% | Acquired | 163.4% (price as of 2026-08-21) |
| Dec. 27, 2018 | AOSL | P 10b5-1 | 12,656 | $9.82 | $124,282 | 4,272,717 Direct | +0.30% | Acquired | 167.9% (price as of 2026-08-21) |
| Dec. 26, 2018 | AOSL | P 10b5-1 | 11,900 | $9.94 | $118,286 | 4,260,061 Direct | +0.28% | Acquired | 164.7% (price as of 2026-08-21) |
| Dec. 24, 2018 | AOSL | P 10b5-1 | 13,115 | $9.82 | $128,789 | 4,248,161 Direct | +0.31% | Acquired | 167.9% (price as of 2026-08-21) |
| Dec. 21, 2018 | AOSL | P 10b5-1 | 22,618 | $9.84 | $222,561 | 4,235,046 Direct | +0.54% | Acquired | 167.4% (price as of 2026-08-21) |
| Dec. 20, 2018 | AOSL | P 10b5-1 | 8,700 | $9.98 | $86,826 | 4,212,428 Direct | +0.21% | Acquired | 163.6% (price as of 2026-08-21) |
| Dec. 19, 2018 | AOSL | P 10b5-1 | 23,202 | $9.94 | $230,628 | 4,203,728 Direct | +0.56% | Acquired | 164.7% (price as of 2026-08-21) |
| Dec. 17, 2018 | AOSL | P 10b5-1 | 17,050 | $9.99 | $170,330 | 4,180,526 Direct | +0.41% | Acquired | 163.4% (price as of 2026-08-21) |
| Dec. 11, 2018 | AOSL | P 10b5-1 | 800 | $10.00 | $8,000 | 4,163,476 Direct | +0.02% | Acquired | 163.1% (price as of 2026-08-21) |
| Dec. 6, 2018 | AOSL | P 10b5-1 | 2,000 | $10.00 | $20,000 | 4,128,271 Direct | +0.05% | Acquired | 163.1% (price as of 2026-08-21) |
Showing latest 100 of 152 transactions
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 |
|---|---|---|---|---|---|---|---|
| Jan. 29, 2024 | AOSL | Employee Share Option (right to buy) | Common Share (30,000) | $7.44 | March 16, 2024 | 30,000 | Disposed |
| Dec. 28, 2023 | AOSL | Employee Share Option (right to buy) | Common Share (30,000) | $7.44 | March 16, 2024 | 30,000 | Disposed |
| Dec. 14, 2023 | AOSL | Employee Share Option (right to buy) | Common Share (30,000) | $7.44 | March 16, 2024 | 30,000 | Disposed |
| Oct. 26, 2023 | AOSL | Employee Share Option (right to buy) | Common Share (30,000) | $7.44 | March 16, 2024 | 0 | Disposed |
| Sept. 26, 2023 | AOSL | Employee Share Option (right to buy) | Common Share (30,000) | $7.44 | March 16, 2024 | 30,000 | Disposed |
| Sept. 1, 2023 | AOSL | Employee Share Option (right to buy) | Common Share (30,000) | $7.44 | March 16, 2024 | 30,000 | Disposed |
| Jan. 9, 2023 | AOSL | Employee Share Option (right to buy) | Common Shares (56,400) | $8.45 | Feb. 14, 2023 | 56,400 | Acquired |
| March 17, 2022 | AOSL | Employee Share Option (right to buy) | Common Share (56,400) | $9.90 | April 25, 2022 | 56,400 | Disposed |
| Oct. 5, 2020 | AOSL | Employee Share Option (right to buy) | Common Shares (94,000) | $12.68 | March 6, 2021 | 94,000 | Disposed |
| March 15, 2018 | AOSL | Performance RSU | Common Share (15,750) | $0.00 | — | 15,750 | Disposed |
| March 15, 2018 | AOSL | Performance RSU | Common Shares (90,000) | $0.00 | — | 90,000 | Acquired |
| March 15, 2017 | AOSL | Common Share | Common Share (63,000) | $0.00 | — | 63,000 | Acquired |
| March 17, 2014 | AOSL | Employee Share Option (right to buy) | Common Share (180,000) | $7.44 | March 16, 2024 | 180,000 | Acquired |
| Feb. 14, 2013 | AOSL | Employee Share Option (right to buy) | Common Shares (56,400) | $8.45 | Feb. 14, 2023 | 56,400 | Acquired |
| April 26, 2012 | AOSL | Employee Share Option (right to buy) | Common Share (56,400) | $9.90 | April 25, 2022 | 56,400 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 5 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| July 1, 2011 | AOSL | Common Shares | 4,144,836 | Direct |
| July 1, 2011 | AOSL | Employee Share Option (right to buy)→ Common Shares (34,965) | 34,965 | Direct |
| July 1, 2011 | AOSL | Employee Share Option (right to buy)→ Common Shares (90,035) | 90,035 | Direct |
| July 1, 2011 | AOSL | Employee Share Option (right to buy)→ Common Shares (125,000) | 125,000 | Direct |
| July 1, 2011 | AOSL | Employee Share Option (right to buy)→ Common Shares (94,000) | 94,000 | 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 |
|---|---|---|---|---|---|---|---|---|
| 2025 | $462,539 | — | $1,242,450 | — | — | — | $1,289 | $1,706,278 |
| 2024 | $490,000 | — | $1,616,250 | — | — | — | $632 | $2,106,882 |
| 2023 | $508,062 | — | $2,311,369 | — | $412,580 | — | $3,050 | $3,235,061 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.