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SEC EDGAR - Form 4 insider activity

Ambiq Micro, Inc. $AMBQ

Tracked equity - 4 filings indexed by Nortis

Nortis signal thesis

Cluster activity detected. Review whether the filings are open-market trades or routine compensation events.

0

OM buys - 90d

4

OM sells - 90d

0

Routine filings

4

Cluster filings

$491.6K

Largest trade

71/100

Avg signal score

Filing tape

Recent filings

Last 30d: 4
Open-market SellCLUSTERHigh signal 71/100
filed 2026-10-07
WGCFO

Winzeler Jeffrey G - Chief Financial Officer - $161.9K

Insiders sell for many reasons (diversification, tax, personal); size and clustering matter more than a single sale. It is part of a cluster (3+ insiders within 7 days), which is generally more notable than an isolated filing.

View source filing
Open-market SellCLUSTERHigh signal 71/100
filed 2026-10-06
EFCEO

Esaka Fumihide - Director, Chief Executive Officer - $491.6K

Insiders sell for many reasons (diversification, tax, personal); size and clustering matter more than a single sale. It is part of a cluster (3+ insiders within 7 days), which is generally more notable than an isolated filing.

View source filing
Open-market SellCLUSTERHigh signal 71/100
filed 2026-10-06
HMBoard

Hanson Scott McLean - Director, Chief Technology Officer - $257.6K

Insiders sell for many reasons (diversification, tax, personal); size and clustering matter more than a single sale. It is part of a cluster (3+ insiders within 7 days), which is generally more notable than an isolated filing.

View source filing
Open-market SellCLUSTERHigh signal 71/100
filed 2026-10-06
CCOfficer

Chen Sean Chihhsiang - President and COO - $172.2K

Insiders sell for many reasons (diversification, tax, personal); size and clustering matter more than a single sale. It is part of a cluster (3+ insiders within 7 days), which is generally more notable than an isolated filing.

View source filing