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Buy Day today: Neutral (56) Mixed market breadth · no major macro event

Insider Trading

Current insider transactions (SEC Form 4) — buys and sells by officers, directors, and major shareholders.

All Recent Buys Recent Sells
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A compact market overview — not investment advice. Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q).
Ticker Insider Title Date Transaction Price ($) Shares Value ($) SEC Form 4
AMBQ Esaka Fumihide Chief Executive Officer 10/15/2026 Verkauf 51.85 1,200 62,226 Form 4
AMBQ Esaka Fumihide Chief Executive Officer 10/15/2026 Verkauf 51.15 2,800 143,214 Form 4
AMBQ Esaka Fumihide Chief Executive Officer 10/15/2026 Verkauf 50.02 500 25,011 Form 4
AMBQ Esaka Fumihide Chief Executive Officer 10/15/2026 Optionsausübung 8.12 5,000 40,600 Form 4
AMBQ Hanson Scott McLean Chief Technology Officer 10/15/2026 Verkauf 51.86 1,800 93,351 Form 4
AMBQ Hanson Scott McLean Chief Technology Officer 10/15/2026 Verkauf 51.12 3,700 189,148 Form 4
AMBQ Hanson Scott McLean Chief Technology Officer 10/15/2026 Verkauf 50.08 900 45,074 Form 4
AMBQ Hanson Scott McLean Chief Technology Officer 10/15/2026 Verkauf 49.06 600 29,436 Form 4
AMBQ Hanson Scott McLean Chief Technology Officer 10/15/2026 Optionsausübung 8.12 7,000 56,840 Form 4
AMBQ Chen Sean Chihhsiang President and COO 10/14/2026 Verkauf 54.27 200 10,854 Form 4
AMBQ Chen Sean Chihhsiang President and COO 10/14/2026 Verkauf 53.44 4,000 213,745 Form 4
AMBQ Chen Sean Chihhsiang President and COO 10/14/2026 Verkauf 52.47 2,000 104,936 Form 4
AMBQ Chen Sean Chihhsiang President and COO 10/14/2026 Verkauf 51.53 1,261 64,980 Form 4
AMBQ Chen Sean Chihhsiang President and COO 10/14/2026 Verkauf 50.13 7,539 377,923 Form 4
AMBQ Chen Sean Chihhsiang President and COO 10/14/2026 Optionsausübung 8.12 15,000 121,800 Form 4
AMBQ Chen Sean Chihhsiang President and COO 10/05/2026 Verkauf 69.51 100 6,951 Form 4
AMBQ Chen Sean Chihhsiang President and COO 10/05/2026 Verkauf 68.08 800 54,461 Form 4
AMBQ Chen Sean Chihhsiang President and COO 10/05/2026 Verkauf 67.29 1,797 120,913 Form 4
AMBQ Chen Sean Chihhsiang President and COO 10/05/2026 Verkauf 66.38 5,508 365,625 Form 4
AMBQ Chen Sean Chihhsiang President and COO 10/02/2026 Verkauf 71.86 302 21,701 Form 4
AMBQ Chen Sean Chihhsiang President and COO 10/02/2026 Verkauf 69.77 3,008 209,875 Form 4
AMBQ Chen Sean Chihhsiang President and COO 10/02/2026 Verkauf 69.11 2,492 172,218 Form 4
AMBQ Esaka Fumihide Chief Executive Officer 10/02/2026 Verkauf 71.86 862 61,943 Form 4
AMBQ Esaka Fumihide Chief Executive Officer 10/02/2026 Verkauf 69.77 8,585 598,994 Form 4
AMBQ Esaka Fumihide Chief Executive Officer 10/02/2026 Verkauf 69.11 7,113 491,567 Form 4
AMBQ Hanson Scott McLean Chief Technology Officer 10/02/2026 Verkauf 71.86 452 32,480 Form 4
AMBQ Hanson Scott McLean Chief Technology Officer 10/02/2026 Verkauf 69.77 4,500 313,975 Form 4
AMBQ Hanson Scott McLean Chief Technology Officer 10/02/2026 Verkauf 69.11 3,728 257,636 Form 4
AMBQ Winzeler Jeffrey G Chief Financial Officer 10/02/2026 Verkauf 71.86 284 20,408 Form 4
AMBQ Winzeler Jeffrey G Chief Financial Officer 10/02/2026 Verkauf 69.77 2,828 197,316 Form 4
AMBQ Winzeler Jeffrey G Chief Financial Officer 10/02/2026 Verkauf 69.11 2,343 161,921 Form 4
AMBQ Hanson Scott McLean Chief Technology Officer 09/15/2026 Verkauf 61.00 100 6,100 Form 4
AMBQ Hanson Scott McLean Chief Technology Officer 09/15/2026 Verkauf 60.56 4,947 299,573 Form 4
AMBQ Hanson Scott McLean Chief Technology Officer 09/15/2026 Verkauf 59.53 1,953 116,270 Form 4
AMBQ Hanson Scott McLean Chief Technology Officer 09/15/2026 Optionsausübung 8.12 7,000 56,840 Form 4
AMBQ Esaka Fumihide Chief Executive Officer 09/15/2026 Verkauf 61.00 100 6,100 Form 4
AMBQ Esaka Fumihide Chief Executive Officer 09/15/2026 Verkauf 60.55 9,615 582,171 Form 4
AMBQ Esaka Fumihide Chief Executive Officer 09/15/2026 Verkauf 59.56 3,785 225,444 Form 4
AMBQ Esaka Fumihide Chief Executive Officer 09/15/2026 Optionsausübung 8.12 13,500 109,620 Form 4
AMBQ Chen Sean Chihhsiang President and COO 09/14/2026 Verkauf 60.83 1,400 85,166 Form 4
AMBQ Chen Sean Chihhsiang President and COO 09/14/2026 Verkauf 60.24 11,000 662,618 Form 4
AMBQ Chen Sean Chihhsiang President and COO 09/14/2026 Verkauf 59.36 2,600 154,346 Form 4
AMBQ Chen Sean Chihhsiang President and COO 09/14/2026 Optionsausübung 8.12 15,000 121,800 Form 4
AMBQ Esaka Fumihide Chief Executive Officer 09/11/2026 Verkauf 63.86 7,917 505,566 Form 4
AMBQ Esaka Fumihide Chief Executive Officer 09/11/2026 Verkauf 63.27 42,083 2,662,427 Form 4
AMBQ Esaka Fumihide Chief Executive Officer 09/11/2026 Optionsausübung 12.60 50,000 630,000 Form 4
AMBQ Zhang Ker Director 09/11/2026 Verkauf 63.95 900 57,552 Form 4
AMBQ Zhang Ker Director 09/11/2026 Verkauf 63.39 9,100 576,809 Form 4
AMBQ Chen Sean Chihhsiang President and COO 09/04/2026 Verkauf 57.68 2,126 122,625 Form 4
AMBQ Chen Sean Chihhsiang President and COO 09/04/2026 Verkauf 57.09 12,874 734,933 Form 4
AMBQ Chen Sean Chihhsiang President and COO 09/04/2026 Optionsausübung 8.12 15,000 121,800 Form 4
AMBQ Zhang Ker Director 09/04/2026 Verkauf 56.92 185 10,530 Form 4
AMBQ Zhang Ker Director 09/04/2026 Optionsausübung 5.88 1,785 10,496 Form 4
AMBQ Esaka Fumihide Chief Executive Officer 09/02/2026 Verkauf 56.77 9,575 543,574 Form 4
AMBQ Esaka Fumihide Chief Executive Officer 09/02/2026 Verkauf 56.15 1,452 81,534 Form 4
AMBQ Esaka Fumihide Chief Executive Officer 09/02/2026 Optionsausübung 12.60 11,027 138,940 Form 4
AMBQ Esaka Fumihide Chief Executive Officer 09/01/2026 Verkauf 56.39 48,973 2,761,534 Form 4
AMBQ Esaka Fumihide Chief Executive Officer 09/01/2026 Optionsausübung 12.60 48,973 617,060 Form 4
AMBQ Esaka Fumihide Chief Executive Officer 08/31/2026 Verkauf 58.46 5,600 327,359 Form 4
AMBQ Esaka Fumihide Chief Executive Officer 08/31/2026 Verkauf 57.70 13,800 796,277 Form 4

A compact market overview — not investment advice. Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q).

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