Ambarella (AMBA) Director Hu Chenming Receives RSU Award

What Happened
Hu Chenming, a director of Ambarella, received a grant of 3,151 restricted stock units (RSUs) on September 8, 2026 (transaction code A — award). The Form 4 reports an acquisition price of $0.00 for the award (typical for equity compensation grants).

Key Details

• Transaction date: 2026-09-08; Form 4 filed: 2026-09-10 (timely within standard reporting window).
• Award: 3,151 Ordinary Shares in the form of RSUs; reported acquisition price $0.00.
• Vesting: 1/4 of the RSUs vest every three months beginning September 15, 2026, and fully vest on September 15, 2027, subject to continued service (per footnote).
• Shares owned after transaction: not specified in this filing.
• No 10b5-1 plan, tax withholding, or late-filing flags reported in this Form 4.

Context
This is a routine director compensation award to an independent director (part of an annual RSU grant to independent directors), not an open-market purchase or sale. Such grants compensate service and do not, by themselves, indicate a buy or sell signal; they vest over time and depend on continued board service.