Tien Tzuo

CIK: 0001735409

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)3 (12.5%)

Position reduction

Option Exercises (M)8 (33.3%)

Derivative conversions

Awards (A)9 (37.5%)

Compensation grants

Other (G, F, J, C, D, …)4 (16.7%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (2)

AMPL

Amplitude, Inc.

Director

ZUO

ZUORA INC

DirectorOfficer10% Owner

Discretionary Trading P&L

Holdings

Transaction History (24 total)

AMPL
Amplitude, Inc.
Oct 5, 2026
Award(A)
Direct
818 shares-
AMPL
Amplitude, Inc.
Jul 5, 2026
Award(A)
Direct
1.5K shares-
AMPL
Amplitude, Inc.
Apr 5, 2026
Award(A)
Direct
1.5K shares-
AMPL
Amplitude, Inc.
Jan 5, 2026
Award(A)
Direct
999 shares-
AMPL
Amplitude, Inc.
Oct 5, 2025
Award(A)
Direct
977 shares-
AMPL
Amplitude, Inc.
Jul 5, 2025
Award(A)
Direct
894 shares-
AMPL
Amplitude, Inc.
Apr 5, 2025
Award(A)
Direct
398 shares-
AMPL
Amplitude, Inc.
Feb 22, 2025
Award(A)
Direct
44.5K shares-
ZUO
ZUORA INC
Feb 14, 2025
Disposition(D)
Direct
110.1K shares at avg. $10.00$1.1M
ZUO
ZUORA INC
Feb 3, 2025
Award(A)
Restricted Stock Units (RSU)(Class A)
Direct
600K shares-
ZUO
ZUORA INC
Jan 10, 2025
Sale(S)
Direct
49K shares at avg. $9.95$488K
ZUO
ZUORA INC
Jan 2, 2025
Sale(S)
Direct
48.6K shares at avg. $9.93$482K
ZUO
ZUORA INC
Dec 31, 2024
Exercise(M)
Direct
58.3K shares-
ZUO
ZUORA INC
Dec 31, 2024
Exercise(M)
Direct
25K shares-
ZUO
ZUORA INC
Dec 31, 2024
Exercise(M)
Direct
12.5K shares-
ZUO
ZUORA INC
Oct 3, 2024
Sale(S)
Direct
63.9K shares at avg. $8.34$533K
ZUO
ZUORA INC
Oct 1, 2024
Gift(G)
Class B Common Stock
Indirect
179.7K shares-
ZUO
ZUORA INC
Oct 1, 2024
Exercise(M)
Class B Common Stock
Direct
571.8K shares-
ZUO
ZUORA INC
Oct 1, 2024
Tax Payment(F)
Class B Common Stock
Direct
392.1K shares-
ZUO
ZUORA INC
Oct 1, 2024
Gift(G)
Class B Common Stock
Direct
179.7K shares-
ZUO
ZUORA INC
Oct 1, 2024
Exercise(M)
Stock Option (Right to buy Class B Common Stock)
Direct
571.8K shares-
ZUO
ZUORA INC
Sep 30, 2024
Exercise(M)
Direct
50K shares-
ZUO
ZUORA INC
Sep 30, 2024
Exercise(M)
Direct
58.3K shares-
ZUO
ZUORA INC
Sep 30, 2024
Exercise(M)
Direct
12.5K shares-

		Type	Shares	Price		Ownership
Oct 5, 2026	AMPL Amplitude, Inc.	Award(A)	818	-	$0	Direct
Jul 5, 2026	AMPL Amplitude, Inc.	Award(A)	1,521	-	$0	Direct
Apr 5, 2026	AMPL Amplitude, Inc.	Award(A)	1,538	-	$0	Direct
Jan 5, 2026	AMPL Amplitude, Inc.	Award(A)	999	-	$0	Direct
Oct 5, 2025	AMPL Amplitude, Inc.	Award(A)	977	-	-	Direct
Jul 5, 2025	AMPL Amplitude, Inc.	Award(A)	894	-	-	Direct
Apr 5, 2025	AMPL Amplitude, Inc.	Award(A)	398	-	-	Direct
Feb 22, 2025	AMPL Amplitude, Inc.	Award(A)	44,462	-	-	Direct
Feb 14, 2025	ZUO ZUORA INC	Disposition(D)	110,104	$10.00	$1,101,040	Direct
Feb 3, 2025	ZUO ZUORA INC	Award(A) Restricted Stock Units (RSU)(Class A)	600,000	-	-	Direct
Jan 10, 2025	ZUO ZUORA INC	Sale(S)	49,041	$9.95	$487,840	Direct
Jan 2, 2025	ZUO ZUORA INC	Sale(S)	48,569	$9.93	$482,178	Direct
Dec 31, 2024	ZUO ZUORA INC	Exercise(M)	58,333	-	$0	Direct
Dec 31, 2024	ZUO ZUORA INC	Exercise(M)	25,000	-	$0	Direct
Dec 31, 2024	ZUO ZUORA INC	Exercise(M)	12,500	-	$0	Direct
Oct 3, 2024	ZUO ZUORA INC	Sale(S)	63,873	$8.34	$532,931	Direct
Oct 1, 2024	ZUO ZUORA INC	Gift(G) Class B Common Stock	179,702	-	-	Indirect
Oct 1, 2024	ZUO ZUORA INC	Exercise(M) Class B Common Stock	571,785	-	-	Direct
Oct 1, 2024	ZUO ZUORA INC	Tax Payment(F) Class B Common Stock	392,083	-	-	Direct
Oct 1, 2024	ZUO ZUORA INC	Gift(G) Class B Common Stock	179,702	-	-	Direct
Oct 1, 2024	ZUO ZUORA INC	Exercise(M) Stock Option (Right to buy Class B Common Stock)	571,785	-	-	Direct
Sep 30, 2024	ZUO ZUORA INC	Exercise(M)	50,000	-	$0	Direct
Sep 30, 2024	ZUO ZUORA INC	Exercise(M)	58,333	-	$0	Direct
Sep 30, 2024	ZUO ZUORA INC	Exercise(M)	12,500	-	$0	Direct

1-24 of 24 transactions

About Tzuo Tien

Tzuo Tien (SEC CIK 0001735409) files insider reports with the SEC as Director of Amplitude, Inc. (AMPL) and Chairman and CEO of ZUORA INC (ZUO).

Signal8 holds 15 ownership filings by Tzuo Tien (1 Form 3, 14 Form 4), filed between Oct 2, 2024 and Oct 7, 2026. Those filings report 24 transactions, from Sep 30, 2024 to Oct 5, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Tzuo Tien's filings is in SAN FRANCISCO, CA.

Recent filings by Tzuo Tien

Oct 5, 2026: Grant or award of AMPL shares (Form 4, code A).
Jul 5, 2026: Grant or award of AMPL shares (Form 4, code A).
Apr 5, 2026: Grant or award of AMPL shares (Form 4, code A).
Jan 5, 2026: Grant or award of AMPL shares (Form 4, code A).
Oct 5, 2025: Grant or award of AMPL shares (Form 4, code A).

Other insiders filing for Amplitude, Inc. (AMPL)

Skates Spenser, CEO and President
Raji Vijaye Ganesh, Director
Schultz Erica, Director
Crook Nathaniel Glenn, Chief Commercial Officer
Liu Curtis, Chief Technology Officer
Casey Andrew, Chief Financial Officer

How to read Form 4 transaction codes