Insider at

04

Insider transactions

05
0 buys (P) 13 sells (S) Net: $-5,171,849 + 17 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

17 other filings hidden
DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
Sept. 15, 2026 AMBQ S 10b5-1 1,953 $59.53 $116,262 226,273 Direct -0.86% Disposed 10.7% (price as of 2026-10-05)
Sept. 15, 2026 AMBQ S 10b5-1 4,947 $60.56 $299,590 221,326 Direct -2.19% Disposed 8.9% (price as of 2026-10-05)
Sept. 15, 2026 AMBQ S 10b5-1 100 $61.00 $6,100 221,226 Direct -0.05% Disposed 8.1% (price as of 2026-10-05)
Aug. 27, 2026 AMBQ S 22,590 $59.69 $1,348,397 226,136 Direct -9.08% Disposed 10.4% (price as of 2026-10-05)
Aug. 27, 2026 AMBQ S 4,910 $60.32 $296,171 221,226 Direct -2.17% Disposed 9.3% (price as of 2026-10-05)
Aug. 26, 2026 AMBQ S 27,500 $59.58 $1,638,450 221,226 Direct -11.06% Disposed 10.6% (price as of 2026-10-05)
Aug. 14, 2026 AMBQ S 10b5-1 800 $63.26 $50,608 217,426 Direct -0.37% Disposed 4.2% (price as of 2026-10-05)
Aug. 14, 2026 AMBQ S 10b5-1 5,400 $64.41 $347,814 212,026 Direct -2.48% Disposed 2.3% (price as of 2026-10-05)
Aug. 14, 2026 AMBQ S 10b5-1 800 $65.30 $52,240 211,226 Direct -0.38% Disposed 0.9% (price as of 2026-10-05)
May 14, 2026 AMBQ S 3,900 $68.62 $267,618 209,426 Direct -1.83% Disposed -3.9% (price as of 2026-10-05)
May 14, 2026 AMBQ S 6,100 $69.59 $424,499 203,326 Direct -2.91% Disposed -5.3% (price as of 2026-10-05)
May 14, 2026 AMBQ S 200 $70.50 $14,100 203,126 Direct -0.10% Disposed -6.5% (price as of 2026-10-05)
Jan. 26, 2026 AMBQ S 10,000 $31.00 $310,000 122,818 Direct -7.53% Disposed 112.6% (price as of 2026-10-05)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.

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DateTickerSecurityUnderlying Exercise priceExpirationSharesA/D
Sept. 15, 2026 AMBQ Stock Option (Right to Buy) Common Stock (7,000) $8.12 Oct. 1, 2028 7,000 Disposed
Aug. 27, 2026 AMBQ Stock Option (Right to Buy) Common Stock (27,500) $8.12 Feb. 20, 2029 27,500 Disposed
Aug. 26, 2026 AMBQ Stock Option (Right to Buy) Common Stock (10,000) $8.12 Oct. 1, 2028 10,000 Disposed
Aug. 26, 2026 AMBQ Stock Option (Right to Buy) Common Stock (27,500) $8.12 Feb. 20, 2029 27,500 Disposed
Aug. 14, 2026 AMBQ Stock Option (Right to Buy) Common Stock (7,000) $8.12 Oct. 1, 2028 7,000 Disposed
May 15, 2026 AMBQ Stock Option (Right to Buy) Common Stock (8,100) $8.12 Oct. 1, 2028 8,100 Disposed
May 14, 2026 AMBQ Stock Option (Right to Buy) Common Stock (10,200) $8.12 Oct. 1, 2028 10,200 Disposed

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 5 holdings

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Securities held when first becoming an insider, per SEC Form 3.

DateTickerSecuritySharesOwnership
July 29, 2025 AMBQ Common Stock 48,999 Direct
July 29, 2025 AMBQ Stock Option (Right to Buy)→ Common Stock (87,579) 87,579 Direct
July 29, 2025 AMBQ Stock Option (Right to Buy)→ Common Stock (138,558) 138,558 Direct
July 29, 2025 AMBQ Stock Option (Right to Buy)→ Common Stock (116,878) 116,878 Direct
July 29, 2025 AMBQ Stock Option (Right to Buy)→ Common Stock (71,428) 71,428 Direct

Compensation (DEF 14A)

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Matched by name from proxy statements (DEF 14A) — verify against the filing.

Fiscal yearSalaryBonusStock awards Option awardsNon-equity incentivePension changeOtherTotal
2025 $433,506 $413,540 · · · · · $3,334,794

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.