Amplitude, Inc. insider trading

Bought

—

Sold

$7.1M

7 of 7 on a 10b5-1 plan

Net

−$7.1M

Insiders

4

• Skates Spenser10b5-1

  CEO and President · Director

  −$2.3M

  Sep 10, 2026

  185,000 sh · $12.30

• Crook Nathaniel Glenn10b5-1

  Chief Commercial Officer

  −$3.9M

  Sep 04, 2026

  300,000 sh · $12.99

• Wong Catherine10b5-1

  Director

  −$50.6K

  Jun 12, 2026

  7,453 sh · $6.79

• Liu Curtis10b5-1

  Chief Technology Officer · Director

  −$178.2K

  Jun 01, 2026

  22,201 sh · $8.03

• Liu Curtis10b5-1

  Chief Technology Officer · Director

  −$142.9K

  May 04, 2026

  17,586 sh · $8.12

• Liu Curtis10b5-1

  Chief Technology Officer · Director

  −$265.8K

  Mar 06, 2026

  33,201 sh · $8.01

• Liu Curtis10b5-1

  Chief Technology Officer · Director

  −$240.5K

  Mar 05, 2026

  30,061 sh · $8.00

Largest purchase

+$299.7K of AMPL by Casey Andrew (Chief Financial Officer) on Nov 07, 2025.

Largest sale

−$4.4M of AMPL by Skates Spenser (Chief Executive Officer · Director) on Nov 11, 2025, under a 10b5-1 plan.

From SEC's quarterly Form 3, 4 and 5 data sets: code P purchases and code S sales of common stock, by the date the trade happened. Where a fund and the people who control it each report the same block, it is counted once. Trades made in the last days of Q2 2026 but filed after it closed arrive with SEC's next quarterly release.

SEC industry classification

Services-Prepackaged Software

Headquarters

San Francisco, CA

Incorporated in

DE

Listed on

Nasdaq

SEC Central Index Key

0001866692

Sourced from this company's own SEC submissions record. The industry label is SEC's Standard Industrial Classification, which is more specific than the Technology sector shown above.

The live dashboard is free to open. Alerts, watchlists, full filing history and each mover's benchmark-measured track record are Pro. Monitoring, not advice.

Open-market purchase (code P)

An insider spending their own money at market price. This is the only buy code that reliably carries signal — it is a decision, not compensation.

Grants and option exercises (codes A, M)

Scheduled compensation. Most "insider buying" headlines are really this, which is why InsiderPulse weights it at a fraction of a real purchase.

Cluster buy

Two or more different insiders buying on the open market in the same window. One executive buying can mean anything; three is much harder to explain away.

Are AMPL insiders buying or selling?

Between Mar 05, 2026 and Sep 10, 2026, 4 Amplitude, Inc. insiders made no open-market purchases and 7 sales worth $7.1M, a net sale of $7.1M. 7 of the sales were pre-scheduled under a Rule 10b5-1 plan.

How much AMPL stock have insiders bought and sold in the last two years?

Between Jul 01, 2024 and Jun 30, 2026, 6 Amplitude, Inc. insiders made 2 open-market purchases worth $539.5K and 27 sales worth $8.4M. Every one of the sales was pre-scheduled under a Rule 10b5-1 plan. In the four quarters to Jun 30, 2026: 1 purchase ($299.7K) and 15 sales ($6.6M). The largest purchase was Casey Andrew buying $299.7K on Nov 07, 2025. The largest sale was Skates Spenser selling $4.4M on Nov 11, 2025.

What was the largest recent AMPL insider trade?

Crook Nathaniel Glenn (Chief Commercial Officer) sold $3.9M of AMPL stock on Sep 04, 2026 at about $12.99 a share, under a pre-scheduled 10b5-1 plan.

When did an insider last buy AMPL shares?

No open-market purchase by a Amplitude, Inc. insider appears in the filings from Mar 05, 2026 to Sep 10, 2026 — every recorded open-market transaction in that period was a sale. Before that, the most recent purchase in SEC's data was Casey Andrew buying $299.7K on Nov 07, 2025.

Where does AMPL insider trading data come from?

From the Form 4 filings Amplitude, Inc.'s officers, directors and 10% owners must send the SEC within two business days of a trade. Each row on this page links to its original filing on SEC EDGAR. Share grants and option exercises are kept apart from open-market purchases and sales, because only the latter cost the insider their own money.