Esaka Fumihide

Director · Officer · AMBQ

As of 2026-09-16, Esaka Fumihide has 45 Form 4 transactions on record across 1 company — 45 in the trailing 12 months.

Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.

Reconstructed holdings

Direct: $3.5MIndirect: $0$3.5Mas of 2026-09-16
  • Direct $3.5M
  • Indirect $0
AMBQdirect58,507 sh$3.5M

Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.

Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.

Trades by company

AMBQ · 45 trades
2026-09-15: Sale, 9,615 sh ($582K)2026-09-15: Sale, 3,785 sh ($225K)2026-09-15: Option exercise, 13,500 sh ($110K)2026-09-15: Sale, 100 sh ($6K)2026-09-15: Option exercise, 13,500 sh ($0)2026-09-11: Sale, 42,083 sh ($2.7M)2026-09-11: Option exercise, 50,000 sh ($630K)2026-09-11: Sale, 7,917 sh ($506K)2026-09-11: Option exercise, 19,007 sh ($0)2026-09-11: Option exercise, 30,993 sh ($0)2026-09-02: Sale, 9,575 sh ($544K)2026-09-02: Option exercise, 11,027 sh ($139K)2026-09-02: Sale, 1,452 sh ($82K)2026-09-02: Option exercise, 11,027 sh ($0)2026-09-01: Sale, 48,973 sh ($2.8M)2026-09-01: Option exercise, 48,973 sh ($617K)2026-09-01: Option exercise, 48,973 sh ($0)2026-08-31: Sale, 15,600 sh ($886K)2026-08-31: Sale, 13,800 sh ($796K)2026-08-31: Option exercise, 44,271 sh ($558K)2026-08-31: Sale, 5,899 sh ($335K)2026-08-31: Sale, 5,600 sh ($327K)2026-08-31: Sale, 5,501 sh ($318K)2026-08-31: Sale, 2,100 sh ($123K)2026-08-31: Option exercise, 13,500 sh ($110K)2026-08-31: Option exercise, 13,500 sh ($0)2026-08-31: Option exercise, 9,271 sh ($0)2026-08-31: Option exercise, 35,000 sh ($0)2026-08-14: Sale, 10,718 sh ($690K)2026-08-14: Option exercise, 13,500 sh ($110K)2026-08-14: Sale, 1,500 sh ($98K)2026-08-14: Sale, 1,282 sh ($81K)2026-08-14: Option exercise, 13,500 sh ($0)2026-05-15: Option exercise, 45,463 sh ($369K)2026-05-15: Option exercise, 14,537 sh ($183K)2026-05-15: Option exercise, 7,936 sh ($0)2026-05-15: Option exercise, 6,601 sh ($0)2026-05-15: Option exercise, 45,463 sh ($0)2026-05-14: Sale, 60,000 sh ($4.2M)2026-05-14: Option exercise, 60,000 sh ($487K)2026-05-14: Option exercise, 60,000 sh ($0)2026-03-06: Award / grant, 160,616 sh ($0)2025-10-07: Option exercise, 53,660 sh ($316K)2025-10-07: Option exercise, 53,660 sh ($0)2025-10-02: Award / grant, 159,907 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-09-15AMBQSale9,615 @ $60.55$582K−2.0% of holding460,560Form 4
2026-09-15AMBQSale3,785 @ $59.56$225K−0.8% of holding470,175Form 4
2026-09-15AMBQSale100 @ $61.00$6K−0.0% of holding460,460Form 4
2026-09-11AMBQSale42,083 @ $63.27$2.7M−8.2% of holding468,377Form 4
2026-09-11AMBQSale7,917 @ $63.86$506K−1.7% of holding460,460Form 4
2026-09-02AMBQSale9,575 @ $56.77$544K−2.0% of holding460,460Form 4
2026-09-02AMBQSale1,452 @ $56.15$82K−0.3% of holding470,035Form 4
2026-09-01AMBQSale48,973 @ $56.39$2.8M−9.6% of holding460,460Form 4
2026-08-31AMBQSale15,600 @ $56.81$886K−3.1% of holding479,860Form 4
2026-08-31AMBQSale13,800 @ $57.70$796K−2.9% of holding466,060Form 4
2026-08-31AMBQSale5,899 @ $56.87$335K−1.3% of holding458,790Form 4
2026-08-31AMBQSale5,600 @ $58.46$327K−1.2% of holding460,460Form 4
2026-08-31AMBQSale5,501 @ $57.75$318K−1.2% of holding453,289Form 4
2026-08-31AMBQSale2,100 @ $58.52$123K−0.5% of holding451,189Form 4
2026-08-14AMBQSale10,718 @ $64.40$690K−2.3% of holding452,689Form 4
2026-08-14AMBQSale1,500 @ $65.26$98K−0.3% of holding451,189Form 4
2026-08-14AMBQSale1,282 @ $63.29$81K−0.3% of holding463,407Form 4
2026-05-14AMBQSale60,000 @ $70.02$4.2M−13.3% of holding391,189Form 4
27 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-09-15AMBQOption exercise13,500473,960Form 4
2026-09-15AMBQOption exercise13,50058,507Form 4
2026-09-11AMBQOption exercise50,000510,460Form 4
2026-09-11AMBQOption exercise19,0070Form 4
2026-09-11AMBQOption exercise30,993144,279Form 4
2026-09-02AMBQOption exercise11,027471,487Form 4
2026-09-02AMBQOption exercise11,02719,007Form 4
2026-09-01AMBQOption exercise48,973509,433Form 4
2026-09-01AMBQOption exercise48,97330,034Form 4
2026-08-31AMBQOption exercise44,271495,460Form 4
2026-08-31AMBQOption exercise13,500464,689Form 4
2026-08-31AMBQOption exercise13,50072,007Form 4
2026-08-31AMBQOption exercise9,271175,272Form 4
2026-08-31AMBQOption exercise35,00079,007Form 4
2026-08-14AMBQOption exercise13,500464,689Form 4
2026-08-14AMBQOption exercise13,50085,507Form 4
2026-05-15AMBQOption exercise45,463436,652Form 4
2026-05-15AMBQOption exercise14,537451,189Form 4
2026-05-15AMBQOption exercise7,936114,007Form 4
2026-05-15AMBQOption exercise6,601184,543Form 4
2026-05-15AMBQOption exercise45,46399,007Form 4
2026-05-14AMBQOption exercise60,000451,189Form 4
2026-05-14AMBQOption exercise60,000144,470Form 4
2026-03-06AMBQAward / grant160,616391,189Form 4
2025-10-07AMBQOption exercise53,660230,573Form 4
2025-10-07AMBQOption exercise53,6600Form 4
2025-10-02AMBQAward / grant159,907176,913Form 4

Source: SEC Form 4 filings. Each row links to its original filing.

Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.