Amplitude, Inc. (AMPL) Insider Trading

Last 12 months

Insiders bought $300k and sold $13.3M on the open market.

All of the selling was scheduled in advance under 10b5-1 plans.

Net open-market

−$13M

1 buy · 14 sales

Under a 10b5-1 plan

100%

of the value sold

Insiders who bought / sold

1 / 5

executives and directors

Last open-market buy

Nov 2025

Nov 7, 2025

Get an email when AMPL's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Oct 2	Spenser Skates CEO and President	Sold10b5-1 plan	70,087	$14.52	$1.02M	100%	Form 4
Sep 30 – Oct 1	Spenser Skates CEO and President	Sold10b5-1 plan 2 parts	4,913	$14.45 average	$71k	100%	Form 4
Sep 10	Spenser Skates CEO and President	Sold10b5-1 plan	185,000	$12.30	$2.28M	100%	Form 4
Sep 4	Nathaniel Glenn Crook Chief Commercial Officer	Sold10b5-1 plan	300,000	$12.99	$3.9M	16%	Form 4
Jun 12	Catherine Wong Director	Sold10b5-1 plan	7,453	$6.79	$51k	6.3%	Form 4
Jun 1	Curtis Liu Chief Technology Officer	Sold10b5-1 plan	22,786	$8.03	$183k	2.2%	Form 4
May 4	Curtis Liu Chief Technology Officer	Sold10b5-1 plan	17,586	$8.12	$143k	1.6%	Form 4
Mar 6	Curtis Liu Chief Technology Officer	Sold10b5-1 plan	33,201	$8.01	$266k	5.2%	Form 4
Mar 5	Curtis Liu Chief Technology Officer	Sold10b5-1 plan	30,061	$8.00	$240k	4.5%	Form 4
Dec 26, 2025	Spenser Skates Chief Executive Officer	Sold10b5-1 plan	100	$12.00	$1k	100%	Form 4
Dec 24, 2025	Spenser Skates Chief Executive Officer	Sold10b5-1 plan	42,743	$12.01	$513k	100%	Form 4
Dec 15, 2025	Erica Schultz Director	Sold10b5-1 plan	10,000	$10.88	$109k	8.0%	Form 4
Nov 17, 2025	Erica Schultz Director	Sold10b5-1 plan	10,000	$10.23	$102k	8.5%	Form 4
Nov 11, 2025	Spenser Skates Chief Executive Officer	Sold10b5-1 plan	400,000	$10.99	$4.4M	100%	Form 4
Nov 7, 2025	Andrew Casey Chief Financial Officer	Bought	30,000	$9.99	$300k	2.7%	Form 4
Oct 15, 2025	Erica Schultz Director	Sold10b5-1 plan	10,000	$10.12	$101k	8.5%	Form 4
Sep 15, 2025	Erica Schultz Director	Sold10b5-1 plan	10,000	$11.06	$111k	8.5%	Form 4
Aug 15, 2025	Erica Schultz Director	Sold10b5-1 plan	7,500	$11.46	$86k	6.5%	Form 4
Jul 15, 2025	Erica Schultz Director	Sold10b5-1 plan	7,500	$12.56	$94k	6.5%	Form 4
Jun 11, 2025	Erica Schultz Director	Sold10b5-1 plan	26,394	$12.49	$330k	22%	Form 4
Jun 11, 2025	Catherine Wong Director	Sold10b5-1 plan	8,502	$12.49	$106k	9.7%	Form 4
May 19, 2025	Catherine Wong Director	Sold10b5-1 plan	3,515	$11.75	$41k	3.9%	Form 4
May 12, 2025	Eric Vishria Director	Sold10b5-1 plan	10,000	$12.00	$120k	2.6%	Form 4
May 8, 2025	Eric Vishria Director	Sold10b5-1 plan	25,000	$10.15	$254k	7.4%	Form 4
Mar 13, 2025	Andrew Casey Chief Financial Officer	Bought	21,000	$11.42	$240k	2.0%	Form 4
Mar 11, 2025	Catherine Wong Director	Sold10b5-1 plan	3,515	$12.04	$42k	3.7%	Form 4
Feb 24, 2025	Eric Vishria Director	Sold10b5-1 plan	35,000	$12.80	$448k	9.4%	Form 4
Jan 28, 2025	Eric Vishria Director	Sold10b5-1 plan	3,563	$12.00	$43k	1.1%	Form 4
Dec 13, 2024	Eric Vishria Director	Sold10b5-1 plan	6,437	$12.02	$77k	1.9%	Form 4
Nov 18, 2024	Catherine Wong Director	Sold10b5-1 plan	3,515	$9.57	$34k	3.6%	Form 4
Nov 12, 2024	Eric Vishria Director	Sold10b5-1 plan	25,000	$10.18	$255k	7.0%	Form 4

Oct 210b5-1 plan
Spenser Skates
CEO and President · sold 70,087 at $14.52
$1.02M
100% of stake
Sep 30 – Oct 110b5-1 plan
Spenser Skates
CEO and President · sold 4,913 at avg $14.45
$71k
100% of stake
Sep 1010b5-1 plan
Spenser Skates
CEO and President · sold 185,000 at $12.30
$2.28M
100% of stake
Sep 410b5-1 plan
Nathaniel Glenn Crook
Chief Commercial Officer · sold 300,000 at $12.99
$3.9M
16% of stake
Jun 1210b5-1 plan
Catherine Wong
Director · sold 7,453 at $6.79
$51k
6.3% of stake
Jun 110b5-1 plan
Curtis Liu
Chief Technology Officer · sold 22,786 at $8.03
$183k
2.2% of stake
May 410b5-1 plan
Curtis Liu
Chief Technology Officer · sold 17,586 at $8.12
$143k
1.6% of stake
Mar 610b5-1 plan
Curtis Liu
Chief Technology Officer · sold 33,201 at $8.01
$266k
5.2% of stake
Mar 510b5-1 plan
Curtis Liu
Chief Technology Officer · sold 30,061 at $8.00
$240k
4.5% of stake
Dec 26, 202510b5-1 plan
Spenser Skates
Chief Executive Officer · sold 100 at $12.00
$1k
100% of stake
Dec 24, 202510b5-1 plan
Spenser Skates
Chief Executive Officer · sold 42,743 at $12.01
$513k
100% of stake
Dec 15, 202510b5-1 plan
Erica Schultz
Director · sold 10,000 at $10.88
$109k
8.0% of stake
Nov 17, 202510b5-1 plan
Erica Schultz
Director · sold 10,000 at $10.23
$102k
8.5% of stake
Nov 11, 202510b5-1 plan
Spenser Skates
Chief Executive Officer · sold 400,000 at $10.99
$4.4M
100% of stake
Nov 7, 2025
Andrew Casey
Chief Financial Officer · bought 30,000 at $9.99
$300k
2.7% of stake
Oct 15, 202510b5-1 plan
Erica Schultz
Director · sold 10,000 at $10.12
$101k
8.5% of stake
Sep 15, 202510b5-1 plan
Erica Schultz
Director · sold 10,000 at $11.06
$111k
8.5% of stake
Aug 15, 202510b5-1 plan
Erica Schultz
Director · sold 7,500 at $11.46
$86k
6.5% of stake
Jul 15, 202510b5-1 plan
Erica Schultz
Director · sold 7,500 at $12.56
$94k
6.5% of stake
Jun 11, 202510b5-1 plan
Erica Schultz
Director · sold 26,394 at $12.49
$330k
22% of stake
Jun 11, 202510b5-1 plan
Catherine Wong
Director · sold 8,502 at $12.49
$106k
9.7% of stake
May 19, 202510b5-1 plan
Catherine Wong
Director · sold 3,515 at $11.75
$41k
3.9% of stake
May 12, 202510b5-1 plan
Eric Vishria
Director · sold 10,000 at $12.00
$120k
2.6% of stake
May 8, 202510b5-1 plan
Eric Vishria
Director · sold 25,000 at $10.15
$254k
7.4% of stake
Mar 13, 2025
Andrew Casey
Chief Financial Officer · bought 21,000 at $11.42
$240k
2.0% of stake
Mar 11, 202510b5-1 plan
Catherine Wong
Director · sold 3,515 at $12.04
$42k
3.7% of stake
Feb 24, 202510b5-1 plan
Eric Vishria
Director · sold 35,000 at $12.80
$448k
9.4% of stake
Jan 28, 202510b5-1 plan
Eric Vishria
Director · sold 3,563 at $12.00
$43k
1.1% of stake
Dec 13, 202410b5-1 plan
Eric Vishria
Director · sold 6,437 at $12.02
$77k
1.9% of stake
Nov 18, 202410b5-1 plan
Catherine Wong
Director · sold 3,515 at $9.57
$34k
3.6% of stake
Nov 12, 202410b5-1 plan
Eric Vishria
Director · sold 25,000 at $10.18
$255k
7.0% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch AMPL, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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