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AMBQ · Ambiq Micro, Inc.
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TEAM-2.62% 13F +440META+1.00% 13F +2,694RCG+0.35% CLUSTERUTHR-0.54% 13F +425CRWV+5.68% 13F +694CRM-1.97% 13F +1,019CVNA+1.58% 13F +795TPL-1.11% 13F +444NET-1.96% 13F +711MSTR-1.39% 13F +527DELL+1.50% 13F +1,204CRWD-0.87% 13F +1,383ANET+1.22% 13F +1,324COIN-4.18% 13F +475TEAM-2.62% 13F +440META+1.00% 13F +2,694RCG+0.35% CLUSTERUTHR-0.54% 13F +425CRWV+5.68% 13F +694CRM-1.97% 13F +1,019CVNA+1.58% 13F +795TPL-1.11% 13F +444NET-1.96% 13F +711MSTR-1.39% 13F +527DELL+1.50% 13F +1,204CRWD-0.87% 13F +1,383ANET+1.22% 13F +1,324COIN-4.18% 13F +475
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AMBQ

Ambiq Micro, Inc.
SEMICONDUCTORS & ELECTRONICS · SEMICONDUCTORS & RELATED DEVICES · CIK 0001500412
FORM 144 · 9☆ WATCH
INSIDER NET · 180D
-$27.1M
open-market buys minus sells, Form 4 codes P and S
INSIDER BUYERS · 180D
0
CONGRESS BUYERS · 1Y
0
FUNDS ADDED · QTR
150
13F, latest reported quarter
REVENUE GROWTH
-4.7%
XBRL, annual
NET MARGIN
-50.3%
CONVERSIONS · 180D
18
codes C/M, not in net · $4.3M priced
SEVEN FACTS, RANKED AGAINST THE SECTOR · RANK IS NOT A FORECAST
INSIDERS
net -$27.1M over 180 days
-$10.8M over 90 days
below 73% of Semiconductors & Electronics
CONGRESS
no member of Congress has reported trading it
FUNDS
150 funds added or opened last quarter
more than 52% of Semiconductors & Electronics
REVENUE
-4.7% year over year
below 73% of Semiconductors & Electronics
MARGIN
-50.3% net margin
below 77% of Semiconductors & Electronics
BUYBACKS
no share repurchases reported
SHORT
7.3% of shares outstanding short · 3.1 days to cover · settled 2026-07-31
more than 68% of Semiconductors & Electronics
THE SITUATION · EVERY LINE IS ONE RULE OVER ONE DATASET
Insiders are net sellers: -$27.1M across 6 people in 180 days.
150 funds added or opened positions in the latest 13F quarter, of 186 holders.
The year, with the filings on it
Total return indexed to 100 over the last 12 months · every marker is a federal filing, placed at its date — hover any marker for the detail
TOTAL 12M RETURN +55.2%
+55.2%12M
-39%+22%+83%+144%2025-092025-102025-122026-032026-052026-072026-09 2026-05-14 · Esaka Fumihide sold $4.2M2026-09-01 · Esaka Fumihide sold $2.8M2026-05-15 · Chen Sean Chihhsiang sold $2.3M2026-05-27 · Chen Timothy sold $1.9M2026-05-14 · Winzeler Jeffrey G sold $1.8M2026-05-27 · Chen Timothy sold $1.8M2026-05-27 · Chen Timothy sold $1.7M2026-05-15 · Chen Sean Chihhsiang sold $1.7M2026-08-26 · Hanson Scott McLean sold $1.6M2026-08-27 · Hanson Scott McLean sold $1.3M2026-08-31 · Esaka Fumihide sold $886.2K2026-08-31 · Esaka Fumihide sold $796.3K2026-08-14 · Esaka Fumihide sold $690.2K2026-09-02 · Esaka Fumihide sold $543.6K2026-05-14 · Hanson Scott McLean sold $424.5K2026-08-14 · Hanson Scott McLean sold $347.8K2026-08-31 · Esaka Fumihide sold $335.5K2026-08-31 · Esaka Fumihide sold $327.4K2026-08-31 · Esaka Fumihide sold $317.7K2026-01-26 · Hanson Scott McLean sold $310.0K2026-08-27 · Hanson Scott McLean sold $296.2K2026-05-14 · Hanson Scott McLean sold $267.6K2026-05-27 · Chen Timothy sold $266.2K2026-01-26 · TAUTGES JOSEPH A sold $241.8K2026-08-31 · Esaka Fumihide sold $122.9K2026-08-14 · Esaka Fumihide sold $97.9K2026-09-02 · Esaka Fumihide sold $81.5K2026-08-14 · Esaka Fumihide sold $81.1K2026-08-14 · Hanson Scott McLean sold $52.2K2026-08-14 · Hanson Scott McLean sold $50.6K2026-04-02 · Connors Michele Kim sold $17.2K2026-05-14 · Hanson Scott McLean sold $14.1K2026-05-14 · Winzeler Jeffrey G sold $5.8K2026-04-02 · Connors Michele Kim sold $4.0K2026-09-04 · KER ZHANG filed to sell $10.5K2026-09-04 · SEAN CHEN filed to sell $1.7M2026-09-02 · FUMIHIDE (HUMI) ESAKA filed to sell $625.1K2026-09-01 · FUMIHIDE (HUMI) ESAKA filed to sell $2.8M2026-08-31 · FUMIHIDE (HUMI) ESAKA filed to sell $2.0M2026-08-27 · SCOTT HANSON filed to sell $1.6M2026-08-26 · SCOTT HANSON filed to sell $1.6M2026-08-14 · FUMIHIDE ESAKA filed to sell $2.9M2026-08-14 · SCOTT HANSON filed to sell $1.4M
INSIDER SELLFORM 144
INDEXED RETURN, DIVIDEND-ADJUSTED — NOT A PRICE CHART · LARGE TRADES DRAWN FIRST WHEN A NAME FILES HEAVILY
Live price
Daily candles from TradingView, on their licence — no filings are marked on this one
WHY THIS NAME IS ON THE DESK
Insiders have filed to sell — before selling.
The record shows a net $27.1M sold by insiders over 180 days, 150 funds added last quarter, $14.7M in planned Form 144 sales. Every figure is a federal filing, dated the day it became public.
Backtest this pattern Open the screener
Same sector, ranked by filing activity
Sector from the SEC's own SIC classification
NVDACRDOVICRMPWRVPLMALABPIMTSIMUAIPAVGOMSI
Insider transactions
Form 4 purchases and sales (codes P and S) — grants, option exercises and preferred conversions excluded

Over the last 180 days, Ambiq Micro, Inc. insiders sold a net $27.1M of stock across 34 Form 4 purchases and sales, with 0 insider(s) buying. Source: SEC Form 4 filings, as of 2026-09-06.

INSIDER
FILED
SHARES
VALUE
Esaka Fumihide
Chief Executive Officer
SELL
2026-09-02
1,452.0
$81.5K
Esaka Fumihide
Chief Executive Officer
SELL
2026-09-02
9,575.0
$543.6K
Esaka Fumihide
Chief Executive Officer
SELL
2026-09-01
48,973.0
$2.8M
Esaka Fumihide
Chief Executive Officer
SELL
2026-08-31
5,899.0
$335.5K
Esaka Fumihide
Chief Executive Officer
SELL
2026-08-31
5,501.0
$317.7K
34 TRANSACTIONS ON RECORD

Showing the most recent few. Create a free account to see 29 more transactions on record, the cross-source screener and CSV export. We store only your email address, and there is no password to create.

Institutional holders
13F · holdings as of the latest quarter funds have reported
BlackRock, Inc.
1,380,623.0 sh
$121.9M
D. E. Shaw & Co., Inc.
983,916.0 sh
$86.9M
Atreides Management, LP
877,123.0 sh
$77.4M
STATE STREET CORP
861,979.0 sh
$76.1M
VANGUARD CAPITAL MANAGEMENT LLC
768,539.0 sh
$67.9M
SCHEDULE 13D/G
No 5%+ ownership filings
Nobody has crossed 5% with a filing obligation. Absence is a fact here, not missing data.
Planned sales · Form 144
Filed before the sale — intent, not a trade
KER ZHANG
FILED 2026-09-04
$10.5K
SEAN CHEN
FILED 2026-09-04
$1.7M
FUMIHIDE (HUMI) ESAKA
FILED 2026-09-02
$625.1K
FUMIHIDE (HUMI) ESAKA
FILED 2026-09-01
$2.8M
FUMIHIDE (HUMI) ESAKA
FILED 2026-08-31
$2.0M
Fund concentration
N-PORT · funds ranked by how much of THEMSELVES they put in this stock — the conviction number 13F cannot show
Templeton Global Smaller Companies Fund
$15.0M POSITION · AS OF 2026-02-28
1.8%
Pear tree essex environmental opportunities fund
$317.5K POSITION · AS OF 2026-03-31
1.2%
Wasatch Micro Cap Fund
$6.4M POSITION · AS OF 2026-03-31
1.1%
Buffalo Early Stage Growth Fund
$668.9K POSITION · AS OF 2026-03-31
1.1%
Goldman Sachs Small Cap Growth Fund
$2.8M POSITION · AS OF 2026-02-28
0.7%
Small-Cap Growth Portfolio
$2.5M POSITION · AS OF 2026-03-31
0.6%
SEC N-PORT, MONTHLY WITH A ~60-DAY PUBLIC LAG · FUNDS ≥ $10M · % = SHARE OF THE FUND'S OWN BOOK
Fundamentals
Annual figures from XBRL filings · pick a past date to see them exactly as the market knew them then — restatements and all
2025-122024-12
REVENUE$72.5M$76.1M
GROSS PROFIT$32.1M$24.3M
OPERATING INCOME$-39.5M$-40.6M
NET INCOME$-36.5M$-39.7M
EPS (DILUTED)-4.57-113.50
OPERATING CASH FLOW$-19.7M$-21.4M
CASH$140.3M$61.0M
SEC XBRL · FISCAL-YEAR PERIODS · AS KNOWN ON 2026-09-06 · NOBODY ELSE SHOWS FUNDAMENTALS AS OF A PAST DATE
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Public filings, honestly analyzed. Official US government sources in one desk — every figure carries the date it was filed, and the methodology is published, backtest included.

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