AMBR (AMBR) Insider Trading
Directors, officers and holders of more than 10% of AMBR report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.
Recent Form 4 transactions
The 19 most recent of 19 transactions on file: 0 with code P, 0 with code S and 19 with other codes.
| Date | Insider | Title | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Oct 23, 2026 | Wu Yuao | Chief Executive Officer | A Award | 23,469,189 | Not measured | Not measured |
| Sep 30, 2026 | Wu Yuao | Chief Executive Officer | J Other | 4,081,011 | Not measured | Not measured |
| Sep 30, 2026 | Wu Yuao | Chief Executive Officer | J Other | 1,360,337 | Not measured | Not measured |
| Jun 24, 2026 | IP WING WAI | Director | A Award | 1,000 | Not measured | Not measured |
| Jun 24, 2026 | IP WING WAI | Director | A Award | 1,000 | Not measured | Not measured |
| Jun 11, 2026 | Wu Yuao | Chief Executive Officer | J Other | 4,536,770 | Not measured | Not measured |
| Jun 10, 2026 | Wu Yuao | Chief Executive Officer | J Other | 36,233,237 | Not measured | Not measured |
| Jun 10, 2026 | Wu Yuao | Chief Executive Officer | J Other | 36,233,237 | Not measured | Not measured |
| Jun 10, 2026 | Wu Yuao | Chief Executive Officer | J Other | 19,753,953 | Not measured | Not measured |
| Jun 4, 2026 | Wu Yuao | Chief Executive Officer | J Other | 18,147,222 | Not measured | Not measured |
| Jun 2, 2026 | Wu Yuao | Chief Executive Officer | J Other | 11,729,691 | Not measured | Not measured |
| Jun 2, 2026 | Wu Yuao | Chief Executive Officer | J Other | 6,225,342 | Not measured | Not measured |
| May 29, 2026 | Wu Yuao | Chief Executive Officer | J Other | 69,552,266 | Not measured | Not measured |
| May 29, 2026 | Wu Yuao | Chief Executive Officer | J Other | 6,698,479 | Not measured | Not measured |
| May 29, 2026 | Wu Yuao | Chief Executive Officer | J Other | 19,458,931 | Not measured | Not measured |
| May 29, 2026 | Wu Yuao | Chief Executive Officer | J Other | 4,620,646 | Not measured | Not measured |
| May 29, 2026 | Wu Yuao | Chief Executive Officer | J Other | 309,834,748 | Not measured | Not measured |
| Apr 1, 2026 | Ngai Yuk Chun | Chief Financial Officer | A Award | 6,250 | Not measured | Not measured |
| Apr 1, 2026 | Ngai Yuk Chun | Chief Financial Officer | A Award | 6,250 | Not measured | Not measured |
Questions about this data
Which insider transactions are open-market trades?
Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.
How quickly are insider trades reported?
A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.
Who has to file Form 4?
Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.
Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.