Tien Tzuo

Tien Tzuo discloses dealings in 3 companies, chiefly Zuora Inc, Amplitude, Inc. and Vonage Holdings Corp. In total, 39 filings cover trades dated from 1 June 2021 to 5 October 2026.

No open-market purchase appears, only 1 sale worth €483k. Outside the open market, there are 10 share grants and 24 option exercises.

On 7 October 2026 came the latest disclosure, a share grant in Amplitude, Inc. Between a trade and the moment it shows up on SEC (Form 4), the median delay is 3 days. Section 16 rules allow two business days to file each Form 4. Sales are harder to read than purchases, since they often meet personal needs such as tax or diversification. These figures are compiled from regulatory filings published by SEC (Form 4). They describe what insiders did and are not a recommendation.