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AMPL

Amplitude (AMPL) stock: insider trades, news & valuation

Net selling
Close · Oct 9, 2026 $15.67 +2.5% on the day +51.3% over 12 months 52-week range $5.61 – $15.67

Share price and insider trades

AMPL closeInsider buyInsider sale
5101520NovDecJan 2026FebMarAprMayJunJulAugSepOctEEarnings release filed 2025-11-05EEarnings release filed 2026-02-18EEarnings release filed 2026-05-06EEarnings release filed 2026-08-05Sold $1,200 on 2025-12-26 · Spenser SkatesSold $19,858 on 2026-09-30 · Spenser SkatesSold $50,606 on 2026-06-12 · Catherine WongSold $51,139 on 2026-10-01 · Spenser SkatesSold $101,200 on 2025-10-15 · Erica SchultzSold $102,300 on 2025-11-17 · Erica SchultzSold $108,800 on 2025-12-15 · Erica SchultzSold $142,798 on 2026-05-04 · Curtis LiuSold $240,488 on 2026-03-05 · Curtis LiuSold $265,940 on 2026-03-06 · Curtis LiuBought $299,700 on 2025-11-07 · Andrew CaseySold $361,246 on 2026-06-01 · Curtis LiuSold $513,343 on 2025-12-24 · Spenser SkatesSold $1,017,684 on 2026-10-02 · Spenser SkatesSold $2,275,500 on 2026-09-10 · Spenser SkatesSold $3,897,000 on 2026-09-04 · Nathaniel Glenn CrookSold $4,396,000 on 2025-11-11 · Spenser Skates
Bought, 12 months$300K
Sold, 12 months$13.5M
Insiders buying1
Insiders selling5

Amplitude insider trading at a glance (Oct 9, 2026): in the past 12 months, 1 insider bought $300K and 5 sold $13.5M of AMPL stock on the open market.

AMPL insider buying and selling by quarter

Open-market purchases (green, above the line) and sales (red, below), by trade date.

Q4 2025: $300K bought (1 trades)$300KQ4 2025: $5.2M sold (6 trades)Q4 2025Q1 2026: $506K sold (2 trades)Q1 2026Q2 2026: $555K sold (4 trades)Q2 2026Q3 2026: $6.2M sold (3 trades)Q3 2026Q4 2026: $1.1M sold (2 trades)Q4 2026
QuarterBoughtPurchasesSoldSales
Q4 2026—0$1.1M2
Q3 2026—0$6.2M3
Q2 2026—0$555K4
Q1 2026—0$506K2
Q4 2025$300K1$5.2M6

Valuation, profit and volume

P/E (trailing)n/aSector median —
Market value— 
Profit margin—Revenue growth —
Volume vs. 50-day1.3×Last 5 sessions
Insiders' paper profit+$170KOn all tracked purchases +56.9%

Summary

Over the past 12 months, 1 Amplitude, Inc. insider reported open-market purchases totaling $300K, while 5 insiders reported sales totaling $13.5M. 17 of 17 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.

AMPL earnings: how the stock reacted

Each quarterly results release (SEC 8-K Item 2.02), the trend before it, insider trades in the 30 days before, and the 2-day market reaction. “E” marks releases on the chart above.

Does it matter? →
Release15 days beforeInsiders, 30 days beforeReaction (2 days)Next 30 days
Aug 5, 2026 +0.5% None +9.0%S&P -0.4% +20.9%
May 6, 2026 +12.3% Sold $143K -25.7%S&P +1.1% +29.6%
Feb 18, 2026 -30.0% None +12.9%S&P +0.2% -2.1%
Nov 5, 2025 -4.3% Sold $101K +4.5%S&P -0.7% +12.6%
Aug 6, 2025 -3.1% None +3.0%S&P +0.7% -9.3%
May 7, 2025 +21.5% None +12.1%S&P +1.1% +21.3%
Feb 19, 2025 -1.1% None +19.2%S&P -0.2% -19.3%
Nov 7, 2024 +10.4% None -0.8%S&P +1.2% +15.9%

Most companies bar insiders from trading in the weeks before results, so pre-earnings purchases are rare and often made by directors or under pre-set plans. Past reactions don't predict future ones.

Insider transactions

Open-market purchases and sales.

Filed Insider Type Shares Price Value Since Score
Oct 6SEC Spenser SkatesCEO, President Sell Plan 70,087 $14.52 $1.0M +7.9% —
Oct 2SEC Spenser SkatesCEO, President Sell Plan 3,539 $14.45 $51K +8.4% —
Oct 2SEC Spenser SkatesCEO, President Sell Plan 1,374 $14.45 $20K +8.4% —
Sep 14SEC Spenser SkatesCEO, President Sell Plan 185,000 $12.30 $2.3M +27.4% —
Sep 9SEC Nathaniel Glenn CrookChief Commercial Officer Sell Plan 300,0001,622,696 held (−16%) $12.99 $3.9M +20.6% —
Jun 16SEC Curtis LiuCTO Sell Plan 22,7861,004,194 held (−2%) $8.03 $183K +95.1% —
Jun 15SEC Catherine WongDirector Sell Plan 7,453111,462 held (−6%) $6.79 $51K +130.8% —
Jun 3SEC Curtis LiuCTO Sell Plan 22,2011,004,779 held (−2%) $8.03 $178K +95.1% —
May 6SEC Curtis LiuCTO Sell Plan 17,5861,067,259 held (−2%) $8.12 $143K +93.0% —
Mar 10SEC Curtis LiuCTO Sell Plan 33,201603,756 held (−5%) $8.01 $266K +95.6% —
Mar 9SEC Curtis LiuCTO Sell Plan 30,061636,957 held (−5%) $8.00 $240K +95.9% —
Dec 30SEC Spenser SkatesCEO Sell Plan 100 $12.00 $1K +30.6% —
Dec 29SEC Spenser SkatesCEO Sell Plan 42,743 $12.01 $513K +30.5% —
Dec 17SEC Erica SchultzDirector Sell Plan 10,000114,906 held (−8%) $10.88 $109K +44.0% —
Nov 19SEC Erica SchultzDirector Sell Plan 10,000107,406 held (−9%) $10.23 $102K +53.2% —
Nov 13SEC Spenser SkatesCEO Sell Plan 400,000 $10.99 $4.4M +42.6% —
Nov 12SEC Andrew CaseyCFO Buy 30,0001,160,608 held (+3%) $9.99 $300K +56.9% —
Oct 17SEC Erica SchultzDirector Sell Plan 10,000107,406 held (−9%) $10.12 $101K +54.8% —

Insiders at Amplitude, Inc.

InsiderBoughtSoldLast filingScore
Spenser SkatesCEO, President — $8.3M Oct 6, 2026 —
Nathaniel Glenn CrookChief Commercial Officer — $3.9M Sep 9, 2026 —
Curtis LiuCTO — $1.0M Jun 16, 2026 —
Andrew CaseyCFO $300K — Nov 12, 2025 —
Erica SchultzDirector — $312K Dec 17, 2025 —
Catherine WongDirector — $51K Jun 15, 2026 —

AMPL stock: common questions

Are Amplitude, Inc. insiders buying AMPL stock?

In the past 12 months, 1 insiders reported open-market purchases of AMPL worth $300K. The latest was CFO Andrew Casey bought $300K of AMPL at $9.99 — first open-market purchase in our records.

Are Amplitude, Inc. insiders selling AMPL stock?

5 insiders reported sales worth $13.5M over the same period.

Where does this data come from?

Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.

What is AMPL's 52-week range?

Over the past year AMPL has traded between $5.61 and $15.67. It last closed at $15.67 on Oct 9, 2026.