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KZ

Ker Zhang

Director at Ambiq Micro. Also CEO and director at Crossbar.

ExecutiveDirectorPublic companyRoles at 2 startups
Updated Oct 27, 2026·Latest SEC filing Sep 15, 2026·Suggest an edit

About Ker Zhang

Ker Zhang is a director at Ambiq Micro.

Form D filings also name Ker Zhang as CEO and director at Crossbar.

Ker Zhang reports to the SEC as a director or officer of 2 public companies, including PTK Acquisition (PTK.U).

Ker Zhang first appears on SEC filings in 2017.

Experience

This experience comes from SEC filings. The years are when the filings name Ker Zhang in the role, so the role may have started earlier or lasted longer.

Ambiq Micro, Inc.
Director
2017 – 2026 · Public company (AMBQ)
Crossbar, Inc.
CEO and director
2019 – 2024 · Santa Clara, CA
PTK Acquisition Corp.
Secretary and director
2020 · Public company (PTK.U)

Key Colleagues at Startups

The people Ker Zhang works with at each company, as listed on that company's latest Form D.

Ambiq Micro, Inc. · Form D, Sep 27, 2024
TC
Timothy Chen
Director
JT
HL
Huang Lee
Director
WH
Wen Hsieh
Executive officer and director
SC
Sean Chen
Executive officer and director
SH
Scott Hanson
Executive officer and director
SG
Scott Goodwin
Executive officer
PR
Paul Rolls
Executive officer
EH
Edward Hill
Director
FE
Fumihide Esaka
Chief Executive Officer and director
KS
Crossbar, Inc. · Form D, Jan 29, 2024
SW
Shicheng Wei
Executive officer
WY
Weijie Yun
Director
LY
Lei Yang
Director
SW
Sherman Wan
Executive officer
AS
Amit Shah
Director
BL
Brian Li
Executive officer
WH
Wen Hsieh
Director
MD
Mark Davis
Executive officer

Sources

  1. SECAmbiq Micro, Inc. Form D, filed Sep 27, 2024
  2. SECCrossbar, Inc. Form D, filed Jan 29, 2024
  3. SECForms 3, 4 and 5 filed by Ker Zhang (SEC filer 1266870)