Last 12 months
Inside the activity.
0 purchase rows · 44 sale rows
Disclosed non-derivative P/S rows, by transaction month. Includes amendments and private transactions.Monthly counts
| Month | Purchases | Sales |
|---|---|---|
| Nov 2025 | 0 | 0 |
| Dec 2025 | 0 | 9 |
| Jan 2026 | 0 | 1 |
| Feb 2026 | 0 | 0 |
| Mar 2026 | 0 | 13 |
| Apr 2026 | 0 | 1 |
| May 2026 | 0 | 4 |
| Jun 2026 | 0 | 7 |
| Jul 2026 | 0 | 3 |
| Aug 2026 | 0 | 0 |
| Sep 2026 | 0 | 6 |
| Oct 2026 | 0 | 0 |
Latest available
Insider transactions
Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Owner / reported role | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| September 16, 2016 Filed Sep 20, 2016 21:02 UTC |
Kohn LeslieDirector · CTO
|
Exercise / conversionRestricted Stock Units · Derivative | 2,975 | $0.00 | $0.00 |
DisclosureSEC source: 0001280263-16-000204 · edgardoc.xml · derivative · entry 5 Kohn Leslie · CIK 0001558645 · Director · CTO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 23,800 Underlying: Ordinary Shares · 2,975 shares Expires 2024-09-07 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Ambarella, Inc. Ordinary Shares. F5 · derivative.exercise_date: The restricted stock units vest at the rate of 1/16 per quarter beginning on September 15, 2014. F5 · derivative.expiration_date: The restricted stock units vest at the rate of 1/16 per quarter beginning on September 15, 2014. Read SEC document |
| September 16, 2016 Filed Sep 20, 2016 21:02 UTC |
Kohn LeslieDirector · CTO
|
Exercise / conversionRestricted Stock Units · Derivative | 3,500 | $0.00 | $0.00 |
DisclosureSEC source: 0001280263-16-000204 · edgardoc.xml · derivative · entry 4 Kohn Leslie · CIK 0001558645 · Director · CTO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 14,000 Underlying: Ordinary Shares · 3,500 shares Expires 2023-08-27 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Ambarella, Inc. Ordinary Shares. F4 · derivative.exercise_date: The restricted stock units vest at the rate of 1/16 per quarter beginning on September 15, 2013. F4 · derivative.expiration_date: The restricted stock units vest at the rate of 1/16 per quarter beginning on September 15, 2013. Read SEC document |
| September 16, 2016 Filed Sep 20, 2016 21:02 UTC |
Kohn LeslieDirector · CTO
|
Exercise / conversionRestricted Stock Units · Derivative | 764 | $0.00 | $0.00 |
DisclosureSEC source: 0001280263-16-000204 · edgardoc.xml · derivative · entry 3 Kohn Leslie · CIK 0001558645 · Director · CTO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Ordinary Shares · 764 shares Expires 2022-08-27 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Ambarella, Inc. Ordinary Shares. F3 · derivative.exercise_date: The restricted stock units vest at the rate of 1/16 per quarter beginning on September 15, 2012. F3 · derivative.expiration_date: The restricted stock units vest at the rate of 1/16 per quarter beginning on September 15, 2012. Read SEC document |
| September 16, 2016 Filed Sep 20, 2016 21:02 UTC |
Kohn LeslieDirector · CTO
|
SaleOrdinary Shares | 5,489 | $67.98 | $373,142.22 |
DisclosureSEC source: 0001280263-16-000204 · edgardoc.xml · nonDerivative · entry 2 Kohn Leslie · CIK 0001558645 · Director · CTO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 891,237 F2 · kind: Shares sold to pay tax obligations resulting from the vesting of restricted stock award and restricted stock units. Read SEC document |
| September 16, 2016 Filed Sep 20, 2016 21:02 UTC |
Kohn LeslieDirector · CTO
|
Exercise / conversionOrdinary Shares | 7,239 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001280263-16-000204 · edgardoc.xml · nonDerivative · entry 1 Kohn Leslie · CIK 0001558645 · Director · CTO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 896,726 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · price: Each restricted stock unit represents a contingent right to receive one share of Ambarella, Inc. Ordinary Shares. Read SEC document |
| September 07, 2016 Filed Sep 8, 2016 23:14 UTC | Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative | 27,165 | $0.00 Strike: $8.82 | $0.00 |
DisclosureSEC source: 0001280263-16-000194 · edgardoc.xml · derivative · entry 4 Laplante George · CIK 0001558646 · CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 44,912 Underlying: Ordinary Shares · 27,165 shares Expires 2021-03-07 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F4 · derivative.exercise_date: An option to purchase 288,306 shares was granted on March 8, 2011 and was exercised in part prior to the date on which the reporting person became subject to Section 16. One-fourth of the shares subject to the option vested on March 7, 2012 and one forty-eighth of the shares vest monthly thereafter. Read SEC document |
|
| September 07, 2016 Filed Sep 8, 2016 23:14 UTC | Exercise / conversionIncentive Stock Option (right to buy) · Derivative | 2,835 | $0.00 Strike: $8.82 | $0.00 |
DisclosureSEC source: 0001280263-16-000194 · edgardoc.xml · derivative · entry 3 Laplante George · CIK 0001558646 · CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Ordinary Shares · 2,835 shares Expires 2021-03-07 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_date: An option to purchase 11,337 shares was granted on March 8, 2011 and was exercised in part prior to the date on which the Reporting Person became subject to Section 16. One-fourth of the shares subject to the option vested on March 7, 2012 and one forty-eighth of the shares vest monthly thereafter. Read SEC document |
|
| September 07, 2016 Filed Sep 8, 2016 23:14 UTC | SaleOrdinary Shares | 30,000 | $67.08 | $2,012,463.00 |
DisclosureSEC source: 0001280263-16-000194 · edgardoc.xml · nonDerivative · entry 2 Laplante George · CIK 0001558646 · CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 88,720 F1 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on June 28, 2016. F2 · price: The sale price reported in column 4 of Table I represents the weighted average sale price of the shares sold ranging from $67.0811 to $67.0826 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the reporting person will provide full information regarding the number of shares sold at each separate price within the ranges set forth in this Form 4. Read SEC document |
|
| September 07, 2016 Filed Sep 8, 2016 23:14 UTC | Exercise / conversionOrdinary Shares | 30,000 | $8.82 | $264,600.00 |
DisclosureSEC source: 0001280263-16-000194 · edgardoc.xml · nonDerivative · entry 1 Laplante George · CIK 0001558646 · CFO 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 118,720 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
|
| September 07, 2016 Filed Sep 8, 2016 23:14 UTC |
PAISLEY CHRISTOPHER BDirector
|
Exercise / conversionNon-Qualified Stock Option (right to buy) · Derivative | 1,000 | $0.00 Strike: $6.00 | $0.00 |
DisclosureSEC source: 0001280263-16-000193 · edgardoc.xml · derivative · entry 3 PAISLEY CHRISTOPHER B · CIK 0001189229 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 16,667 Underlying: Ordinary Shares · 1,000 shares Expires 2022-10-08 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F2 · derivative.exercise_date: Shares subject to the option vest monthly over four years beginning on August 20, 2012. Read SEC document |
| September 07, 2016 Filed Sep 8, 2016 23:14 UTC |
PAISLEY CHRISTOPHER BDirector
|
SaleOrdinary Shares | 1,000 | $69.13 | $69,130.00 |
DisclosureSEC source: 0001280263-16-000193 · edgardoc.xml · nonDerivative · entry 2 PAISLEY CHRISTOPHER B · CIK 0001189229 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 9,014 F1 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on June 13, 2016. Read SEC document |
| September 07, 2016 Filed Sep 8, 2016 23:14 UTC |
PAISLEY CHRISTOPHER BDirector
|
Exercise / conversionOrdinary Shares | 1,000 | $6.00 | $6,000.00 |
DisclosureSEC source: 0001280263-16-000193 · edgardoc.xml · nonDerivative · entry 1 PAISLEY CHRISTOPHER B · CIK 0001189229 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 10,014 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| September 06, 2016 Filed Sep 8, 2016 23:54 UTC |
TAN LIP BUDirector
|
GrantRestricted Stock Units · Derivative | 2,904 | $0.00 | $0.00 |
DisclosureSEC source: 0000899243-16-028727 · doc4.xml · derivative · entry 1 TAN LIP BU · CIK 0001008463 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 2,904 Underlying: Ordinary Shares · 2,904 shares Expires not disclosed F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Ambarella, Inc. Ordinary Shares. F2 · derivative.exercise_date: The restricted stock units vest as to 1/4th of the restricted stock units each three months following the vesting start date of September 15, 2016, so as to be 100% vested on September 15, 2017. F2 · derivative.expiration_date: The restricted stock units vest as to 1/4th of the restricted stock units each three months following the vesting start date of September 15, 2016, so as to be 100% vested on September 15, 2017. Read SEC document |
| September 06, 2016 Filed Sep 8, 2016 19:12 UTC |
Hu ChenmingDirector
|
GrantRestricted Stock Units · Derivative | 2,904 | $0.00 | $0.00 |
DisclosureSEC source: 0001280263-16-000191 · edgardoc.xml · derivative · entry 1 Hu Chenming · CIK 0001316320 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 2,904 Underlying: Ordinary Shares · 2,904 shares Expires 2017-09-15 F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Ambarella, Inc. Ordinary Shares. F2 · derivative.exercise_date: The restricted stock units will vest as to 1/4th of the restricted stock units each three months following the vesting start date of September 15, 2016, so as to be 100% vested on September 15, 2017. F2 · derivative.expiration_date: The restricted stock units will vest as to 1/4th of the restricted stock units each three months following the vesting start date of September 15, 2016, so as to be 100% vested on September 15, 2017. Read SEC document |
| September 06, 2016 Filed Sep 8, 2016 23:55 UTC |
VERHALEN ANDREW WDirector
|
GrantRestricted Stock Units · Derivative | 2,904 | $0.00 | $0.00 |
DisclosureSEC source: 0000899243-16-028728 · doc4.xml · derivative · entry 1 VERHALEN ANDREW W · CIK 0001205979 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 2,904 Underlying: Ordinary Shares · 2,904 shares Expires not disclosed F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Ambarella, Inc. Ordinary Shares. F2 · derivative.exercise_date: The restricted stock units vest as to 1/4th of the restricted stock units each three months following the vesting start date of September 15, 2016, so as to be 100% vested on September 15, 2017. F2 · derivative.expiration_date: The restricted stock units vest as to 1/4th of the restricted stock units each three months following the vesting start date of September 15, 2016, so as to be 100% vested on September 15, 2017. Read SEC document |
| September 06, 2016 Filed Sep 8, 2016 23:14 UTC |
PAISLEY CHRISTOPHER BDirector
|
GrantRestricted Stock Units · Derivative | 2,904 | $0.00 | $0.00 |
DisclosureSEC source: 0001280263-16-000193 · edgardoc.xml · derivative · entry 4 PAISLEY CHRISTOPHER B · CIK 0001189229 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 2,904 Underlying: Restricted Stock Units · 2,904 shares Expires 2017-09-15 F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Ambarella, Inc. Ordinary Shares. F4 · derivative.exercise_date: The restricted stock units will vest as to 1/4th of the restricted stock units each three months following the vesting start date of September 15, 2016, so as to be 100% vested on September 15, 2017. F4 · derivative.expiration_date: The restricted stock units will vest as to 1/4th of the restricted stock units each three months following the vesting start date of September 15, 2016, so as to be 100% vested on September 15, 2017. Read SEC document |
| September 06, 2016 Filed Sep 8, 2016 23:12 UTC |
RICHARDSON DAVID JEFFREYDirector
|
GrantRestricted Stock Units · Derivative | 2,904 | $0.00 | $0.00 |
DisclosureSEC source: 0001280263-16-000192 · edgardoc.xml · derivative · entry 1 RICHARDSON DAVID JEFFREY · CIK 0001329724 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 2,904 Underlying: Ordinary Shares · 2,904 shares Expires 2017-09-15 F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Ambarella, Inc. Ordinary Shares. F2 · derivative.exercise_date: The restricted stock units will vest as to 1/4th of the restricted stock units each three months following the vesting start date of September 15, 2016, so as to be 100% vested on September 15, 2017. F2 · derivative.expiration_date: The restricted stock units will vest as to 1/4th of the restricted stock units each three months following the vesting start date of September 15, 2016, so as to be 100% vested on September 15, 2017. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.