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Who

Tien Tzuo

Director

Company insider

Files Form 4 as: Director, Amplitude; Chairman and CEO, Zuora; Director, Vonage Holdings.

Every Form 4 they filed

In numbers

Trades disclosed
249
Buys
0
Sells
37
Bought
$0
Sold
$16.6M
Companies
3
Companies where not an officer
2
First trade
16 Apr 2018
Last trade
5 Oct 2026
Last filed
7 Oct 2026

Companies traded

Where they are an officer
ZuoraDirector, Officer, 10% owner · last 14 Feb 20250 buys · 37 sells
Everywhere else they filed: board seats, 10% stakes, other companies
AMPL AmplitudeDirector · Software · last 5 Oct 20260 buys · 0 sells
Vonage HoldingsDirector · last 21 Jul 20220 buys · 0 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
10Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
5 Oct 2026filed 7 Oct 2026AMPL AmplitudeSoftwareSEC FORM 4 Code A—818 at $0.00filing
5 Jul 2026filed 7 Jul 2026AMPL AmplitudeSoftwareSEC FORM 4 Code A—1,521 at $0.00filing
5 Jul 2026filed 7 Jul 2026AMPL AmplitudeSoftwareSEC FORM 4 Code A—1,521 at $0.00filing
5 Apr 2026filed 7 Apr 2026AMPL AmplitudeSoftwareSEC FORM 4 Code A—1,538 at $0.00filing
5 Apr 2026filed 7 Apr 2026AMPL AmplitudeSoftwareSEC FORM 4 Code A—1,538 at $0.00filing
5 Jan 2026filed 7 Jan 2026AMPL AmplitudeSoftwareSEC FORM 4 Code A—999 at $0.00filing
5 Jan 2026filed 7 Jan 2026AMPL AmplitudeSoftwareSEC FORM 4 Code A—999 at $0.00filing
5 Oct 2025filed 7 Oct 2025AMPL AmplitudeSoftwareSEC FORM 4 Code A—977 at $0.00filing
5 Jul 2025filed 8 Jul 2025AMPL AmplitudeSoftwareSEC FORM 4 Code A—894 at $0.00filing
5 Apr 2025filed 8 Apr 2025AMPL AmplitudeSoftwareSEC FORM 4 Code A—398 at $0.00filing
22 Feb 2025filed 25 Feb 2025AMPL AmplitudeSoftwareSEC FORM 4 Code A—44,462 at $0.00filing
14 Feb 2025filed 14 Feb 2025Zuoraoption or derivativeSEC FORM 4 Code D$77.0M7,698,605 at $10.00filing
14 Feb 2025filed 14 Feb 2025Zuoraoption or derivativeSEC FORM 4 Code D$6.4M640,542 at $10.00filing
14 Feb 2025filed 14 Feb 2025Zuoraoption or derivativeSEC FORM 4 Code D—362,406filing
14 Feb 2025filed 14 Feb 2025Zuoraoption or derivativeSEC FORM 4 Code D—350,000 at $0.00filing
14 Feb 2025filed 14 Feb 2025Zuoraoption or derivativeSEC FORM 4 Code D—350,000 at $0.00filing
14 Feb 2025filed 14 Feb 2025Zuoraoption or derivativeSEC FORM 4 Code D—500,000 at $0.00filing
14 Feb 2025filed 14 Feb 2025Zuoraoption or derivativeSEC FORM 4 Code D$125K12,500 at $10.00filing
14 Feb 2025filed 14 Feb 2025Zuoraoption or derivativeSEC FORM 4 Code D$2.9M291,669 at $10.00filing
14 Feb 2025filed 14 Feb 2025Zuoraoption or derivativeSEC FORM 4 Code D$2.3M225,000 at $10.00filing

News

No headline names them, or the companies they trade most, lately.

Sectors

Not placed37

Buys in green, sells in red, by the company’s sector.

Related people

Nobody else traded the same names lately.