LYTIR

Insider · SEC Form 4 · Chief Executive Officer

Esaka Fumihide

In the 12 months to Nov 8, 2026, on the open market: sold $12.4M of AMBQ. Filed a median of 1 business day after the trade.

Open-market purchases and sales this filer reported on SEC Form 4, by the day traded. Insiders have two business days to file. A sale marked 10b5-1 was made under a plan adopted in advance. How to read these

Insider purchases and sales, by month (last 12 months)Insider purchases: $0 in total; Insider sales: $12.4M in total.Aug: Insider sales $3.7MSep: Insider sales $7.4MOct: Insider sales $1.4MDecJanFebMarAprMayJunJulAugSepOctNov
Insider purchases above the line: $0Insider sales below: $12.4M
Dollar value of open-market purchases and sales reported on SEC Form 4, by the month traded. Sales include pre-arranged 10b5-1 plan sales.
  1. AMBQSold: Ambiq Micro, Inc. Oct 15, 2026 5,000 shares filed Oct 16, 2026 4 transactions 10b5-1 plan filing $255K
  2. AMBQSold: Ambiq Micro, Inc. Oct 2, 2026 16,560 shares filed Oct 6, 2026 3 transactions filing $1.2M
  3. AMBQSold: Ambiq Micro, Inc. Sep 15, 2026 13,500 shares filed Sep 15, 2026 3 transactions 10b5-1 plan filing $814K
  4. AMBQSold: Ambiq Micro, Inc. Sep 11, 2026 50,000 shares filed Sep 15, 2026 2 transactions 10b5-1 plan filing $3.2M
  5. AMBQSold: Ambiq Micro, Inc. Sep 2, 2026 11,027 shares filed Sep 2, 2026 2 transactions 10b5-1 plan filing $625K
  6. AMBQSold: Ambiq Micro, Inc. Sep 1, 2026 48,973 shares filed Sep 2, 2026 460,460 shares held directly after, as filed 10b5-1 plan filing $2.8M
  7. AMBQSold: Ambiq Micro, Inc. Aug 31, 2026 48,500 shares filed Sep 2, 2026 6 transactions 10b5-1 plan filing $2.8M
  8. AMBQSold: Ambiq Micro, Inc. Aug 14, 2026 13,500 shares filed Aug 18, 2026 3 transactions 10b5-1 plan filing $869K

Source: SEC Form 4 filings. Value is shares × the price reported on the filing; a filing whose price failed Lytir's check against the market price is left out, and a trade that related owners reported on separate forms is counted once. Filings can be late, amended or wrong at the source; see methodology.

Other Form 4 entries

Not counted above: entries this filer reported on Form 4 in the same 12 months that are not open-market purchases or sales. Each entry is one line of a filing.

  • AMBQ: option exercise or conversion (code M), 8 entries, Aug 14 to Oct 15, 2026
Code M
An exercise or conversion of a derivative security received from the company, such as stock options.

Source: the same SEC Form 4 filings. The codes are the SEC's own transaction codes; the meanings above are a plain-words reading of the SEC's Form 4 instructions.