Ker Zhang
Secretary, PTK Acquisition Corp.
Companies
- Ambiq Micro, Inc.Board member Jul 29, 2025 to now1
Holdings
Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.
Shares held
- Ambiq Micro, Inc. AMBQ20,366 shares2$1.0M at $49.59Sep 11, 2026
As of each latest filing. The line shows shares held over time.
Recent filings
- Sep 11, 2026Sold 900 shares at $63.95 of Ambiq Micro, Inc.2
- Sep 11, 2026Sold 9,100 shares at $63.39 of Ambiq Micro, Inc.2
- Sep 4, 2026Sold 185 shares at $56.92 of Ambiq Micro, Inc.3
- Sep 4, 2026Exercised options 1,785 shares at $5.88 of Ambiq Micro, Inc.3
- Jun 8, 2026Granted 4,957 shares of Ambiq Micro, Inc.4
- Jul 29, 2025Granted 23,809 shares of Ambiq Micro, Inc.5
Sources
The numbers on this page point here. Each one links to the record it came from.
- 1SEC EDGARAmbiq Micro, Inc., Board member
- 2
- 3SEC EDGARForm 4 filed Sep 9, 2026
- 4SEC EDGARForm 4 filed Jun 10, 2026
- 5SEC EDGARForm 4 filed Jul 31, 2025