Esaka Fumihide

Chief Executive Officer, DirectorAmbiq Micro, Inc. (AMBQ) · full profile →Form 4 · filed Sep 2, 2026
Net Selling
Open-Market Buys
$0
Open-Market Sells
$6.2M
Net Open-Market Flow
-$6.2M
Transactions
18
13 non-derivative · 5 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Sep 2, 2026Option exercise(M)11K$12.60$139K471K
Sep 2, 2026Sell(S)1K$56.15$82K470K
Sep 2, 2026Sell(S)10K$56.77$544K460K
Sep 1, 2026Option exercise(M)49K$12.60$617K509K
Sep 1, 2026Sell(S)49K$56.39$2.8M460K
Aug 31, 2026Sell(S)16K$56.81$886K480K
Aug 31, 2026Sell(S)14K$57.70$796K466K
Aug 31, 2026Sell(S)6K$58.46$327K460K
Aug 31, 2026Option exercise(M)14K$8.12$110K465K
Aug 31, 2026Sell(S)6K$56.87$335K459K
Aug 31, 2026Sell(S)6K$57.75$318K453K
Aug 31, 2026Sell(S)2K$58.52$123K451K
Aug 31, 2026Option exercise(M)44K$12.60$558K495K

Derivative Transactions (Table II)

DateActionSharesPriceValueOwned After
Sep 2, 2026Option exercise(M)11K$019K
Sep 1, 2026Option exercise(M)49K$030K
Aug 31, 2026Option exercise(M)14K$072K
Aug 31, 2026Option exercise(M)35K$079K
Aug 31, 2026Option exercise(M)9K$0175K

Transaction Codes

M
Option exercise / conversion
S
Open-market sale

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0002078454-26-000012) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

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