Insider Trading › AMBQ › Insiders
Ambiq Micro, Inc.
AMBQ·NYSE·
United States·Insider activity
United States·Insider activity$61.98
-1.26 (-1.99%)
Close · Oct 7, 2026 · Close Prices from Tiingo.com
AMBQ
Insider purchases and sales on the price
Nasdaq 100S&P 500
Filings
Default90D1Y5YALL
AMBQS&P 500 (rebased)
Insider BuyInsider SellForm 144 · planned sale
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Daily closes, adjusted for splits and dividends · Close Prices from Tiingo.comHover a marker, every one is a filing · move across the line for the crosshair
In the last 180 days, AMBQ insiders filed 0 purchases ($0) and 62 sales ($37.0M) on the open market, by 6 insiders. Newest filing Oct 6, 2026 (2 days ago).
Net Insider Buying by Quarter
Shares bought (+) or sold (−) on the open market by AMBQ insiders · Form 4 · last two years
On Record
$0Purchases · 180 days
$37.0MSales · 180 days
66Open-market transactions on record
6Insiders filing · 180 days
Purchases (code P) and sales (code S) of AMBQ common stock reported on Form 4, with Form 5 annual catch-ups. Grants, option exercises, gifts and tax withholding are not shown. Dollars are shares × the stated price; a price outside anything the stock traded at that day is withheld (n/c).
Insider Transactions
66 on record · newest trade first
AllPurchasesSalesOfficers & directors
| Insider | Type | Shares | Price | Value | Held after | Traded | Filed | |
|---|---|---|---|---|---|---|---|---|
| Chen Sean ChihhsiangPresident and COO | Sale | −800 | $68.08 | $54K | 106.4Kdirect | Oct 5, 2026 | Oct 6, 2026 | Form 4 ↗ |
| Chen Sean ChihhsiangPresident and COO | Sale | −5,508 | $66.38 | $366K | 109.0Kdirect | Oct 5, 2026 | Oct 6, 2026 | Form 4 ↗ |
| Chen Sean ChihhsiangPresident and COO | Sale | −1,797 | $67.29 | $121K | 107.2Kdirect | Oct 5, 2026 | Oct 6, 2026 | Form 4 ↗ |
| Chen Sean ChihhsiangPresident and COO | Sale | −100 | $69.51 | $7K | 106.3Kdirect | Oct 5, 2026 | Oct 6, 2026 | Form 4 ↗ |
| Chen Sean ChihhsiangPresident and COO | Sale | −302 | $71.86 | $22K | 114.5Kdirect | Oct 2, 2026 | Oct 6, 2026 | Form 4 ↗ |
| Chen Sean ChihhsiangPresident and COO | Sale | −3,008 | $69.77 | $210K | 114.8Kdirect | Oct 2, 2026 | Oct 6, 2026 | Form 4 ↗ |
| Chen Sean ChihhsiangPresident and COO | Sale | −2,492 | $69.11 | $172K | 117.8Kdirect | Oct 2, 2026 | Oct 6, 2026 | Form 4 ↗ |
| Esaka FumihideChief Executive Officer · Director | Sale | −862 | $71.86 | $62K | 443.9Kdirect | Oct 2, 2026 | Oct 6, 2026 | Form 4 ↗ |
| Esaka FumihideChief Executive Officer · Director | Sale | −8,585 | $69.77 | $599K | 444.8Kdirect | Oct 2, 2026 | Oct 6, 2026 | Form 4 ↗ |
| Esaka FumihideChief Executive Officer · Director | Sale | −7,113 | $69.11 | $492K | 453.3Kdirect | Oct 2, 2026 | Oct 6, 2026 | Form 4 ↗ |
| Hanson Scott McLeanChief Technology Officer · Director | Sale | −452 | $71.86 | $32K | 212.5Kdirect | Oct 2, 2026 | Oct 6, 2026 | Form 4 ↗ |
| Hanson Scott McLeanChief Technology Officer · Director | Sale | −4,500 | $69.77 | $314K | 213.0Kdirect | Oct 2, 2026 | Oct 6, 2026 | Form 4 ↗ |
| Hanson Scott McLeanChief Technology Officer · Director | Sale | −3,728 | $69.11 | $258K | 217.5Kdirect | Oct 2, 2026 | Oct 6, 2026 | Form 4 ↗ |
| Winzeler Jeffrey GChief Financial Officer | Sale | −284 | $71.86 | $20K | 100.8Kdirect | Oct 2, 2026 | Oct 6, 2026 | Form 4 ↗ |
| Winzeler Jeffrey GChief Financial Officer | Sale | −2,828 | $69.77 | $197K | 101.1Kdirect | Oct 2, 2026 | Oct 6, 2026 | Form 4 ↗ |
| Winzeler Jeffrey GChief Financial Officer | Sale | −2,343 | $69.11 | $162K | 104.0Kdirect | Oct 2, 2026 | Oct 6, 2026 | Form 4 ↗ |
| Hanson Scott McLeanChief Technology Officer · Director | Sale | −4,947 | $60.56 | $300K | 221.3Kdirect | Sep 15, 2026 | Sep 17, 2026 | Form 4 ↗ |
| Hanson Scott McLeanChief Technology Officer · Director | Sale | −1,953 | $59.53 | $116K | 226.3Kdirect | Sep 15, 2026 | Sep 17, 2026 | Form 4 ↗ |
| Hanson Scott McLeanChief Technology Officer · Director | Sale | −100 | $61.00 | $6K | 221.2Kdirect | Sep 15, 2026 | Sep 17, 2026 | Form 4 ↗ |
| Esaka FumihideChief Executive Officer · Director | Sale | −9,615 | $60.55 | $582K | 460.6Kdirect | Sep 15, 2026 | Sep 15, 2026 | Form 4 ↗ |
| Esaka FumihideChief Executive Officer · Director | Sale | −3,785 | $59.56 | $225K | 470.2Kdirect | Sep 15, 2026 | Sep 15, 2026 | Form 4 ↗ |
| Esaka FumihideChief Executive Officer · Director | Sale | −100 | $61.00 | $6K | 460.5Kdirect | Sep 15, 2026 | Sep 15, 2026 | Form 4 ↗ |
| Chen Sean ChihhsiangPresident and COO | Sale | −2,600 | $59.36 | $154K | 132.7Kdirect | Sep 14, 2026 | Sep 15, 2026 | Form 4 ↗ |
| Chen Sean ChihhsiangPresident and COO | Sale | −1,400 | $60.83 | $85K | 120.3Kdirect | Sep 14, 2026 | Sep 15, 2026 | Form 4 ↗ |
| Chen Sean ChihhsiangPresident and COO | Sale | −11.0K | $60.24 | $663K | 121.7Kdirect | Sep 14, 2026 | Sep 15, 2026 | Form 4 ↗ |
| Esaka FumihideChief Executive Officer · Director | Sale | −7,917 | $63.86 | $506K | 460.5Kdirect | Sep 11, 2026 | Sep 15, 2026 | Form 4 ↗ |
| Esaka FumihideChief Executive Officer · Director | Sale | −42.1K | $63.27 | $2.7M | 468.4Kdirect | Sep 11, 2026 | Sep 15, 2026 | Form 4 ↗ |
| ZHANG KERDirector · Director | Sale | −9,100 | $63.39 | $577K | 21.3Kdirect | Sep 11, 2026 | Sep 15, 2026 | Form 4 ↗ |
| ZHANG KERDirector · Director | Sale | −900 | $63.95 | $58K | 20.4Kdirect | Sep 11, 2026 | Sep 15, 2026 | Form 4 ↗ |
| Chen Sean ChihhsiangPresident and COO | Sale | −2,126 | $57.68 | $123K | 120.3Kdirect | Sep 4, 2026 | Sep 9, 2026 | Form 4 ↗ |
| Chen Sean ChihhsiangPresident and COO | Sale | −12.9K | $57.09 | $735K | 122.4Kdirect | Sep 4, 2026 | Sep 9, 2026 | Form 4 ↗ |
| ZHANG KERDirector · Director | Sale | −185 | $56.92 | $11K | 30.4Kdirect | Sep 4, 2026 | Sep 9, 2026 | Form 4 ↗ |
| Esaka FumihideChief Executive Officer · Director | Sale | −9,575 | $56.77 | $544K | 460.5Kdirect | Sep 2, 2026 | Sep 2, 2026 | Form 4 ↗ |
| Esaka FumihideChief Executive Officer · Director | Sale | −1,452 | $56.15 | $82K | 470.0Kdirect | Sep 2, 2026 | Sep 2, 2026 | Form 4 ↗ |
| Esaka FumihideChief Executive Officer · Director | Sale | −49.0K | $56.39 | $2.8M | 460.5Kdirect | Sep 1, 2026 | Sep 2, 2026 | Form 4 ↗ |
| Esaka FumihideChief Executive Officer · Director | Sale | −5,899 | $56.87 | $335K | 458.8Kdirect | Aug 31, 2026 | Sep 2, 2026 | Form 4 ↗ |
| Esaka FumihideChief Executive Officer · Director | Sale | −5,600 | $58.46 | $327K | 460.5Kdirect | Aug 31, 2026 | Sep 2, 2026 | Form 4 ↗ |
| Esaka FumihideChief Executive Officer · Director | Sale | −5,501 | $57.75 | $318K | 453.3Kdirect | Aug 31, 2026 | Sep 2, 2026 | Form 4 ↗ |
| Esaka FumihideChief Executive Officer · Director | Sale | −2,100 | $58.52 | $123K | 451.2Kdirect | Aug 31, 2026 | Sep 2, 2026 | Form 4 ↗ |
| Esaka FumihideChief Executive Officer · Director | Sale | −15.6K | $56.81 | $886K | 479.9Kdirect | Aug 31, 2026 | Sep 2, 2026 | Form 4 ↗ |
| Esaka FumihideChief Executive Officer · Director | Sale | −13.8K | $57.70 | $796K | 466.1Kdirect | Aug 31, 2026 | Sep 2, 2026 | Form 4 ↗ |
| Hanson Scott McLeanChief Technology Officer · Director | Sale | −4,910 | $60.32 | $296K | 221.2Kdirect | Aug 27, 2026 | Aug 28, 2026 | Form 4 ↗ |
| Hanson Scott McLeanChief Technology Officer · Director | Sale | −22.6K | $59.69 | $1.3M | 226.1Kdirect | Aug 27, 2026 | Aug 28, 2026 | Form 4 ↗ |
| Hanson Scott McLeanChief Technology Officer · Director | Sale | −27.5K | $59.58 | $1.6M | 221.2Kdirect | Aug 26, 2026 | Aug 28, 2026 | Form 4 ↗ |
| Esaka FumihideChief Executive Officer · Director | Sale | −1,500 | $65.26 | $98K | 451.2Kdirect | Aug 14, 2026 | Aug 18, 2026 | Form 4 ↗ |
| Esaka FumihideChief Executive Officer · Director | Sale | −1,282 | $63.29 | $81K | 463.4Kdirect | Aug 14, 2026 | Aug 18, 2026 | Form 4 ↗ |
| Esaka FumihideChief Executive Officer · Director | Sale | −10.7K | $64.40 | $690K | 452.7Kdirect | Aug 14, 2026 | Aug 18, 2026 | Form 4 ↗ |
| Hanson Scott McLeanChief Technology Officer · Director | Sale | −800 | $65.30 | $52K | 211.2Kdirect | Aug 14, 2026 | Aug 18, 2026 | Form 4 ↗ |
| Hanson Scott McLeanChief Technology Officer · Director | Sale | −800 | $63.26 | $51K | 217.4Kdirect | Aug 14, 2026 | Aug 18, 2026 | Form 4 ↗ |
| Hanson Scott McLeanChief Technology Officer · Director | Sale | −5,400 | $64.41 | $348K | 212.0Kdirect | Aug 14, 2026 | Aug 18, 2026 | Form 4 ↗ |
| Chen TimothyDirector | Sale | −3,264 | $81.57 | $266K | 0indirect | May 27, 2026 | May 29, 2026 | Form 4 ↗ |
| Chen TimothyDirector | Sale | −20.7K | $80.61 | $1.7M | 3,264indirect | May 27, 2026 | May 29, 2026 | Form 4 ↗ |
| Chen TimothyDirector | Sale | −24.2K | $79.72 | $1.9M | 23.9Kindirect | May 27, 2026 | May 29, 2026 | Form 4 ↗ |
| Chen TimothyDirector | Sale | −22.4K | $78.85 | $1.8M | 48.2Kindirect | May 27, 2026 | May 29, 2026 | Form 4 ↗ |
| Chen Sean ChihhsiangPresident and COO | Sale | −23.3K | $71.37 | $1.7M | 120.3Kdirect | May 15, 2026 | May 18, 2026 | Form 4 ↗ |
| Chen Sean ChihhsiangPresident and COO | Sale | −32.4K | $70.53 | $2.3M | 143.6Kdirect | May 15, 2026 | May 18, 2026 | Form 4 ↗ |
| Esaka FumihideChief Executive Officer · Director | Sale | −60.0K | $70.02 | $4.2M | 391.2Kdirect | May 14, 2026 | May 18, 2026 | Form 4 ↗ |
| Hanson Scott McLeanChief Technology Officer · Director | Sale | −200 | $70.50 | $14K | 203.1Kdirect | May 14, 2026 | May 18, 2026 | Form 4 ↗ |
| Hanson Scott McLeanChief Technology Officer · Director | Sale | −6,100 | $69.59 | $424K | 203.3Kdirect | May 14, 2026 | May 18, 2026 | Form 4 ↗ |
| Hanson Scott McLeanChief Technology Officer · Director | Sale | −3,900 | $68.62 | $268K | 209.4Kdirect | May 14, 2026 | May 18, 2026 | Form 4 ↗ |
| Winzeler Jeffrey GChief Financial Officer | Sale | −82 | $70.65 | $6K | 94.4Kdirect | May 14, 2026 | May 18, 2026 | Form 4 ↗ |
| Winzeler Jeffrey GChief Financial Officer | Sale | −25.9K | $69.90 | $1.8M | 94.5Kdirect | May 14, 2026 | May 18, 2026 | Form 4 ↗ |
| Connors Michele KimGeneral Counsel | Sale | −151 | $26.65 | $4K | 60.6Kdirect | Apr 2, 2026 | Apr 6, 2026 | Form 4 ↗ |
| Connors Michele KimGeneral Counsel | Sale | −660 | $26.04 | $17K | 60.7Kdirect | Apr 2, 2026 | Apr 6, 2026 | Form 4 ↗ |
| Hanson Scott McLeanChief Technology Officer · Director | Sale | −10.0K | $31.00 | $310K | 122.8Kdirect | Jan 26, 2026 | Jan 28, 2026 | Form 4 ↗ |
| TAUTGES JOSEPH ADirector | Sale | −7,800 | $31.00 | $242K | 48.7Kdirect | Jan 26, 2026 | Jan 28, 2026 | Form 4 ↗ |
Source: SEC EDGAR Form 4 and Form 5 filings, SEC's quarterly bulk dataset through Jun 30, 2026, and KeyVex's half-hourly read of new filings since. Every row links its filing. Amendments are marked. Nothing here is a recommendation. All insider activity, market-wide →