Wang Feng-Ming 4

What Happened Wang Feng‑Ming, CEO and Director of Ambarella, sold a total of 27,059 shares in open‑market transactions (18,976 shares on 2026‑03‑17 at $52.77 for $1,001,364 and 8,083 shares on 2026‑03‑19 at $54.14 for $437,614, total proceeds ~$1.44M). The filing also shows an exercise/conversion of 27,598 derivative units on 2026‑03‑17 and a same‑day disposition of 27,598 derivative shares (reported at $0), and a grant/award of 15,686 fully‑vested restricted stock units (RSUs) on 2026‑03‑18 (reported value $0 in the Form 4). The report notes 154 shares were acquired under the company’s employee stock purchase plan on March 16, 2026.

Key Details

• Transaction dates and prices:
  • 2026‑03‑17: Sold 18,976 shares @ $52.77 — $1,001,364
  • 2026‑03‑17: Exercise/conversion M — 27,598 shares acquired (reported N/A price) and 27,598 derivative shares disposed at $0
  • 2026‑03‑18: Award A — 15,686 RSUs (fully vested, $0 reported)
  • 2026‑03‑19: Sold 8,083 shares @ $54.14 — $437,614
  • Includes 154 shares from ESPP acquired 2026‑03‑16
• Shares owned after the transactions: not specified in the provided excerpt of the filing.
• Notable footnotes:
  • F1/F4: Each RSU represents a right to one ordinary share; the 15,686 RSUs were issued as the reporting person’s FY2026 annual bonus.
  • F3: Some shares were sold to pay tax withholding obligations arising from RSU vesting.
  • F5: A separate performance‑based RSU grant (from 4/3/2023) vested at 100% of target as of 3/15/2026.
• Filing timeliness: Report filed 2026‑03‑19 for transactions on 3/17–3/19 — appears timely (no late‑filing flag).

Context

• The Form shows an exercise/conversion of 27,598 derivative units with a matching same‑day disposition at $0; filings like this commonly reflect a net settlement or share withholding related to exercise/vesting rather than a cash gain. The filing explicitly states shares were sold to cover tax obligations from RSU vesting (so the open‑market sales were at least partly for tax withholding).
• The 15,686 RSUs were reported as a fully‑vested bonus award (not a purchase), and the performance RSU award granted in 2023 vested at 100% of target based on company results over the performance period. These acquisitions (RSUs/vesting) are acquisitions, while the open‑market trades were dispositions.