Esaka Fumihide
Chief Executive Officer
Sale 10b5-1
- Shares
- 1,200
- Price
- $51.85
- Value
- $62,226
SEC EDGAR · Forms 3/4/5Updated through Oct 30, 2026•66 filings
AMBQ
Ambiq Micro, Inc.
Net sales of $19.5M over the last 3 months
4 sellers account for the net balance. There is no cluster of three distinct buyers within 30 days. We found no CEO/CFO purchases over 12 months.
How to read this signal
Only open-market P purchases and S sales count toward the signal. Vesting, options, taxes and gifts remain in the source data but do not trigger alerts. Rule 10b5-1 trades are shown as informational.
3-month balance
−$19,516,133
0 buyers · 4 sellers
12-month purchases
$0.00
0 distinct insiders
12-month sales
$36,372,526
7 distinct insiders
Highlighted alerts
20
45 Rule 10b5-1 trades treated as informational
Buying cluster · 30 days
Fewer than three distinct buyers
CEO/CFO purchases · 12 months
No executive purchases found
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Form 4 raw → Raspberry
The value is in what we do not call a signal.
The SEC XML stores every transaction. Raspberry keeps that evidence, reads the footnotes and separates voluntary open-market activity from vesting, option exercises, gifts, tax withholding, stock purchase and dividend reinvestment plans and pre-programmed 10b5-1 trades.
100
Raw transactions
Everything returned by the filing
65
Voluntary view
P/S trades after deterministic checks
49
Administrative noise
Stored, never alerted
77
10b5-1
Shown as informational
SEC ownership XML facts
- Code
- S
- Shares
- 302
- Price
- $71.86
- Footnotes
- 8
This sale reported on this Form 4 was effected pursuant to the Issuer's policy requiring sell-to-cover to satisfy certain tax obligations of the Reporting Person incurred with the vesting and settlement of certain restricted stock units. The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $68.41 to $69.40 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $69.41 to $70.16 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $71.50 to $72.26 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The transactions occurred under a Rule 10b5-1 plan adopted by the Reporting Person on June 5, 2026. The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $65.90 to $66.89 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $66.90 to $67.85 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $67.93 to $68.17 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
Raspberry interpretation
Informational — no alert
Reason: tax_withholding. The filing footnotes identify tax withholding. The trade is reported under a Rule 10b5-1 plan.
Recent transactions
Voluntary purchases and sales; administrative noise stays hidden.
Esaka Fumihide
Chief Executive Officer
Sale 10b5-1
- Shares
- 2,800
- Price
- $51.15
- Value
- $143,214
Esaka Fumihide
Chief Executive Officer
Sale 10b5-1
- Shares
- 500
- Price
- $50.02
- Value
- $25,011
Esaka Fumihide
Chief Executive Officer
Sale 10b5-1
- Shares
- 500
- Price
- $49.13
- Value
- $24,567
Hanson Scott McLean
Chief Technology Officer
Sale 10b5-1
- Shares
- 1,800
- Price
- $51.86
- Value
- $93,351
Hanson Scott McLean
Chief Technology Officer
Sale 10b5-1
- Shares
- 3,700
- Price
- $51.12
- Value
- $189,148
Hanson Scott McLean
Chief Technology Officer
Sale 10b5-1
- Shares
- 900
- Price
- $50.08
- Value
- $45,074
Hanson Scott McLean
Chief Technology Officer
Sale 10b5-1
- Shares
- 600
- Price
- $49.06
- Value
- $29,436
Chen Sean Chihhsiang
President and COO
Sale 10b5-1
- Shares
- 200
- Price
- $54.27
- Value
- $10,854
Chen Sean Chihhsiang
President and COO
Sale 10b5-1
- Shares
- 4,000
- Price
- $53.44
- Value
- $213,745
Chen Sean Chihhsiang
President and COO
Sale 10b5-1
- Shares
- 2,000
- Price
- $52.47
- Value
- $104,936
Chen Sean Chihhsiang
President and COO
Sale 10b5-1
- Shares
- 1,261
- Price
- $51.53
- Value
- $64,980
Chen Sean Chihhsiang
President and COO
Sale 10b5-1
- Shares
- 7,539
- Price
- $50.13
- Value
- $377,923
Chen Sean Chihhsiang
President and COO
Sale 10b5-1
- Shares
- 100
- Price
- $69.51
- Value
- $6,951
Chen Sean Chihhsiang
President and COO
Sale 10b5-1
- Shares
- 800
- Price
- $68.08
- Value
- $54,461
Chen Sean Chihhsiang
President and COO
Sale 10b5-1
- Shares
- 1,797
- Price
- $67.29
- Value
- $120,913
Chen Sean Chihhsiang
President and COO
Sale 10b5-1
- Shares
- 5,508
- Price
- $66.38
- Value
- $365,625
Esaka Fumihide
Chief Executive Officer
Sale 10b5-1
- Shares
- 100
- Price
- $61.00
- Value
- $6,100
Esaka Fumihide
Chief Executive Officer
Sale 10b5-1
- Shares
- 9,615
- Price
- $60.55
- Value
- $582,171
Esaka Fumihide
Chief Executive Officer
Sale 10b5-1
- Shares
- 3,785
- Price
- $59.56
- Value
- $225,444
Hanson Scott McLean
Chief Technology Officer
Sale 10b5-1
- Shares
- 100
- Price
- $61.00
- Value
- $6,100
Hanson Scott McLean
Chief Technology Officer
Sale 10b5-1
- Shares
- 4,947
- Price
- $60.56
- Value
- $299,573
Hanson Scott McLean
Chief Technology Officer
Sale 10b5-1
- Shares
- 1,953
- Price
- $59.53
- Value
- $116,270
Chen Sean Chihhsiang
President and COO
Sale 10b5-1
- Shares
- 1,400
- Price
- $60.83
- Value
- $85,166
Chen Sean Chihhsiang
President and COO
Sale 10b5-1
- Shares
- 11,000
- Price
- $60.24
- Value
- $662,618
Chen Sean Chihhsiang
President and COO
Sale 10b5-1
- Shares
- 2,600
- Price
- $59.36
- Value
- $154,346
Esaka Fumihide
Chief Executive Officer
Sale 10b5-1
- Shares
- 7,917
- Price
- $63.86
- Value
- $505,566
Esaka Fumihide
Chief Executive Officer
Sale 10b5-1
- Shares
- 42,083
- Price
- $63.27
- Value
- $2,662,427
ZHANG KER
Director
SaleAlert
- Shares
- 900
- Price
- $63.95
- Value
- $57,552
ZHANG KER
Director
SaleAlert
- Shares
- 9,100
- Price
- $63.39
- Value
- $576,809
Chen Sean Chihhsiang
President and COO
Sale 10b5-1
- Shares
- 2,126
- Price
- $57.68
- Value
- $122,625
Chen Sean Chihhsiang
President and COO
Sale 10b5-1
- Shares
- 12,874
- Price
- $57.09
- Value
- $734,933
ZHANG KER
Director
SaleAlert
- Shares
- 185
- Price
- $56.92
- Value
- $10,530
Esaka Fumihide
Chief Executive Officer
Sale 10b5-1
- Shares
- 9,575
- Price
- $56.77
- Value
- $543,574
Esaka Fumihide
Chief Executive Officer
Sale 10b5-1
- Shares
- 1,452
- Price
- $56.15
- Value
- $81,534
Esaka Fumihide
Chief Executive Officer
Sale 10b5-1
- Shares
- 48,973
- Price
- $56.39
- Value
- $2,761,534
Esaka Fumihide
Chief Executive Officer
Sale 10b5-1
- Shares
- 5,600
- Price
- $58.46
- Value
- $327,359
Esaka Fumihide
Chief Executive Officer
Sale 10b5-1
- Shares
- 13,800
- Price
- $57.70
- Value
- $796,277
Esaka Fumihide
Chief Executive Officer
Sale 10b5-1
- Shares
- 15,600
- Price
- $56.81
- Value
- $886,219
Esaka Fumihide
Chief Executive Officer
Sale 10b5-1
- Shares
- 2,100
- Price
- $58.52
- Value
- $122,889
Esaka Fumihide
Chief Executive Officer
Sale 10b5-1
- Shares
- 5,501
- Price
- $57.75
- Value
- $317,709
Esaka Fumihide
Chief Executive Officer
Sale 10b5-1
- Shares
- 5,899
- Price
- $56.87
- Value
- $335,453
Hanson Scott McLean
Chief Technology Officer
SaleAlert
- Shares
- 4,910
- Price
- $60.32
- Value
- $296,176
Hanson Scott McLean
Chief Technology Officer
SaleAlert
- Shares
- 22,590
- Price
- $59.69
- Value
- $1,348,433
Hanson Scott McLean
Chief Technology Officer
SaleAlert
- Shares
- 27,500
- Price
- $59.58
- Value
- $1,638,469
Esaka Fumihide
Chief Executive Officer
Sale 10b5-1
- Shares
- 1,500
- Price
- $65.26
- Value
- $97,893
Esaka Fumihide
Chief Executive Officer
Sale 10b5-1
- Shares
- 10,718
- Price
- $64.40
- Value
- $690,201
Esaka Fumihide
Chief Executive Officer
Sale 10b5-1
- Shares
- 1,282
- Price
- $63.29
- Value
- $81,132
Hanson Scott McLean
Chief Technology Officer
Sale 10b5-1
- Shares
- 800
- Price
- $65.30
- Value
- $52,241
Hanson Scott McLean
Chief Technology Officer
Sale 10b5-1
- Shares
- 5,400
- Price
- $64.41
- Value
- $347,793
Hanson Scott McLean
Chief Technology Officer
Sale 10b5-1
- Shares
- 800
- Price
- $63.26
- Value
- $50,605
Chen Timothy
Director
SaleAlert
- Shares
- 3,264
- Price
- $81.57
- Value
- $266,244
Chen Timothy
Director
SaleAlert
- Shares
- 20,666
- Price
- $80.61
- Value
- $1,665,886
Chen Timothy
Director
SaleAlert
- Shares
- 24,248
- Price
- $79.72
- Value
- $1,933,051
Chen Timothy
Director
SaleAlert
- Shares
- 22,414
- Price
- $78.85
- Value
- $1,767,344
Chen Sean Chihhsiang
President and COO
SaleAlert
- Shares
- 23,334
- Price
- $71.37
- Value
- $1,665,455
Chen Sean Chihhsiang
President and COO
SaleAlert
- Shares
- 32,351
- Price
- $70.53
- Value
- $2,281,826
Esaka Fumihide
Chief Executive Officer
SaleAlert
- Shares
- 60,000
- Price
- $70.02
- Value
- $4,201,122
Hanson Scott McLean
Chief Technology Officer
SaleAlert
- Shares
- 200
- Price
- $70.50
- Value
- $14,100
Hanson Scott McLean
Chief Technology Officer
SaleAlert
- Shares
- 6,100
- Price
- $69.59
- Value
- $424,521
Hanson Scott McLean
Chief Technology Officer
SaleAlert
- Shares
- 3,900
- Price
- $68.62
- Value
- $267,631
Winzeler Jeffrey G
Chief Financial Officer
SaleAlert
- Shares
- 82
- Price
- $70.65
- Value
- $5,793
Winzeler Jeffrey G
Chief Financial Officer
SaleAlert
- Shares
- 25,918
- Price
- $69.90
- Value
- $1,811,619
Hanson Scott McLean
Chief Technology Officer
SaleAlert
- Shares
- 10,000
- Price
- $31.00
- Value
- $310,000
TAUTGES JOSEPH A
Director
SaleAlert
- Shares
- 7,800
- Price
- $31.00
- Value
- $241,800
| Date | Insider | Transaction | Shares | Price | Value | Reading |
|---|---|---|---|---|---|---|
| Oct 15, 2026 | Esaka Fumihide Chief Executive Officer | Sale | 1,200 | $51.85 | $62,226 | |
| Oct 15, 2026 | Esaka Fumihide Chief Executive Officer | Sale | 2,800 | $51.15 | $143,214 | |
| Oct 15, 2026 | Esaka Fumihide Chief Executive Officer | Sale | 500 | $50.02 | $25,011 | |
| Oct 15, 2026 | Esaka Fumihide Chief Executive Officer | Sale | 500 | $49.13 | $24,567 | |
| Oct 15, 2026 | Hanson Scott McLean Chief Technology Officer | Sale | 1,800 | $51.86 | $93,351 | |
| Oct 15, 2026 | Hanson Scott McLean Chief Technology Officer | Sale | 3,700 | $51.12 | $189,148 | |
| Oct 15, 2026 | Hanson Scott McLean Chief Technology Officer | Sale | 900 | $50.08 | $45,074 | |
| Oct 15, 2026 | Hanson Scott McLean Chief Technology Officer | Sale | 600 | $49.06 | $29,436 | |
| Oct 14, 2026 | Chen Sean Chihhsiang President and COO | Sale | 200 | $54.27 | $10,854 | |
| Oct 14, 2026 | Chen Sean Chihhsiang President and COO | Sale | 4,000 | $53.44 | $213,745 | |
| Oct 14, 2026 | Chen Sean Chihhsiang President and COO | Sale | 2,000 | $52.47 | $104,936 | |
| Oct 14, 2026 | Chen Sean Chihhsiang President and COO | Sale | 1,261 | $51.53 | $64,980 | |
| Oct 14, 2026 | Chen Sean Chihhsiang President and COO | Sale | 7,539 | $50.13 | $377,923 | |
| Oct 05, 2026 | Chen Sean Chihhsiang President and COO | Sale | 100 | $69.51 | $6,951 | |
| Oct 05, 2026 | Chen Sean Chihhsiang President and COO | Sale | 800 | $68.08 | $54,461 | |
| Oct 05, 2026 | Chen Sean Chihhsiang President and COO | Sale | 1,797 | $67.29 | $120,913 | |
| Oct 05, 2026 | Chen Sean Chihhsiang President and COO | Sale | 5,508 | $66.38 | $365,625 | |
| Sep 15, 2026 | Esaka Fumihide Chief Executive Officer | Sale | 100 | $61.00 | $6,100 | |
| Sep 15, 2026 | Esaka Fumihide Chief Executive Officer | Sale | 9,615 | $60.55 | $582,171 | |
| Sep 15, 2026 | Esaka Fumihide Chief Executive Officer | Sale | 3,785 | $59.56 | $225,444 | |
| Sep 15, 2026 | Hanson Scott McLean Chief Technology Officer | Sale | 100 | $61.00 | $6,100 | |
| Sep 15, 2026 | Hanson Scott McLean Chief Technology Officer | Sale | 4,947 | $60.56 | $299,573 | |
| Sep 15, 2026 | Hanson Scott McLean Chief Technology Officer | Sale | 1,953 | $59.53 | $116,270 | |
| Sep 14, 2026 | Chen Sean Chihhsiang President and COO | Sale | 1,400 | $60.83 | $85,166 | |
| Sep 14, 2026 | Chen Sean Chihhsiang President and COO | Sale | 11,000 | $60.24 | $662,618 | |
| Sep 14, 2026 | Chen Sean Chihhsiang President and COO | Sale | 2,600 | $59.36 | $154,346 | |
| Sep 11, 2026 | Esaka Fumihide Chief Executive Officer | Sale | 7,917 | $63.86 | $505,566 | |
| Sep 11, 2026 | Esaka Fumihide Chief Executive Officer | Sale | 42,083 | $63.27 | $2,662,427 | |
| Sep 11, 2026 | ZHANG KER Director | Sale | 900 | $63.95 | $57,552 | |
| Sep 11, 2026 | ZHANG KER Director | Sale | 9,100 | $63.39 | $576,809 | |
| Sep 04, 2026 | Chen Sean Chihhsiang President and COO | Sale | 2,126 | $57.68 | $122,625 | |
| Sep 04, 2026 | Chen Sean Chihhsiang President and COO | Sale | 12,874 | $57.09 | $734,933 | |
| Sep 04, 2026 | ZHANG KER Director | Sale | 185 | $56.92 | $10,530 | |
| Sep 02, 2026 | Esaka Fumihide Chief Executive Officer | Sale | 9,575 | $56.77 | $543,574 | |
| Sep 02, 2026 | Esaka Fumihide Chief Executive Officer | Sale | 1,452 | $56.15 | $81,534 | |
| Sep 01, 2026 | Esaka Fumihide Chief Executive Officer | Sale | 48,973 | $56.39 | $2,761,534 | |
| Aug 31, 2026 | Esaka Fumihide Chief Executive Officer | Sale | 5,600 | $58.46 | $327,359 | |
| Aug 31, 2026 | Esaka Fumihide Chief Executive Officer | Sale | 13,800 | $57.70 | $796,277 | |
| Aug 31, 2026 | Esaka Fumihide Chief Executive Officer | Sale | 15,600 | $56.81 | $886,219 | |
| Aug 31, 2026 | Esaka Fumihide Chief Executive Officer | Sale | 2,100 | $58.52 | $122,889 | |
| Aug 31, 2026 | Esaka Fumihide Chief Executive Officer | Sale | 5,501 | $57.75 | $317,709 | |
| Aug 31, 2026 | Esaka Fumihide Chief Executive Officer | Sale | 5,899 | $56.87 | $335,453 | |
| Aug 27, 2026 | Hanson Scott McLean Chief Technology Officer | Sale | 4,910 | $60.32 | $296,176 | |
| Aug 27, 2026 | Hanson Scott McLean Chief Technology Officer | Sale | 22,590 | $59.69 | $1,348,433 | |
| Aug 26, 2026 | Hanson Scott McLean Chief Technology Officer | Sale | 27,500 | $59.58 | $1,638,469 | |
| Aug 14, 2026 | Esaka Fumihide Chief Executive Officer | Sale | 1,500 | $65.26 | $97,893 | |
| Aug 14, 2026 | Esaka Fumihide Chief Executive Officer | Sale | 10,718 | $64.40 | $690,201 | |
| Aug 14, 2026 | Esaka Fumihide Chief Executive Officer | Sale | 1,282 | $63.29 | $81,132 | |
| Aug 14, 2026 | Hanson Scott McLean Chief Technology Officer | Sale | 800 | $65.30 | $52,241 | |
| Aug 14, 2026 | Hanson Scott McLean Chief Technology Officer | Sale | 5,400 | $64.41 | $347,793 | |
| Aug 14, 2026 | Hanson Scott McLean Chief Technology Officer | Sale | 800 | $63.26 | $50,605 | |
| May 27, 2026 | Chen Timothy Director | Sale | 3,264 | $81.57 | $266,244 | |
| May 27, 2026 | Chen Timothy Director | Sale | 20,666 | $80.61 | $1,665,886 | |
| May 27, 2026 | Chen Timothy Director | Sale | 24,248 | $79.72 | $1,933,051 | |
| May 27, 2026 | Chen Timothy Director | Sale | 22,414 | $78.85 | $1,767,344 | |
| May 15, 2026 | Chen Sean Chihhsiang President and COO | Sale | 23,334 | $71.37 | $1,665,455 | |
| May 15, 2026 | Chen Sean Chihhsiang President and COO | Sale | 32,351 | $70.53 | $2,281,826 | |
| May 14, 2026 | Esaka Fumihide Chief Executive Officer | Sale | 60,000 | $70.02 | $4,201,122 | |
| May 14, 2026 | Hanson Scott McLean Chief Technology Officer | Sale | 200 | $70.50 | $14,100 | |
| May 14, 2026 | Hanson Scott McLean Chief Technology Officer | Sale | 6,100 | $69.59 | $424,521 | |
| May 14, 2026 | Hanson Scott McLean Chief Technology Officer | Sale | 3,900 | $68.62 | $267,631 | |
| May 14, 2026 | Winzeler Jeffrey G Chief Financial Officer | Sale | 82 | $70.65 | $5,793 | |
| May 14, 2026 | Winzeler Jeffrey G Chief Financial Officer | Sale | 25,918 | $69.90 | $1,811,619 | |
| Jan 26, 2026 | Hanson Scott McLean Chief Technology Officer | Sale | 10,000 | $31.00 | $310,000 | |
| Jan 26, 2026 | TAUTGES JOSEPH A Director | Sale | 7,800 | $31.00 | $241,800 |
“Alert” means a voluntary, unscheduled transaction according to the filing; it is not an investment recommendation. Official source: SEC EDGAR.