Transaction · 0001610717-26-000427

Skates Spenser

Skates Spenser, CEO, PRES, reported an open-market or private sale at Amplitude, Inc. involving 70087.000000 shares for an estimated $1017684.27. Reported holdings after the transaction were 0.000000 shares. The stored filing text includes a detected 10b5-1 reference.

Open-market sellSEC transaction code SCEO, PRES
AMPLAmplitude, Inc.
Filing timeOct 06
Trade dateOct 02, 2026
Filing · SECView on SEC
InsiderProfile
% of reported position traded100%Shares sold ÷ (holdings after + shares sold). Estimated position before: 70,087 shares.

Row-level estimate for this security and ownership context, not the insider’s complete portfolio. Joint ownership, other transactions in the filing, amendments and footnotes can affect interpretation.

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
$14.79
Pre-filing
1mo ago -10.1%1w ago -10.1%1d ago -3.3%
Returns since
7d30d90d180d1y

AMPL price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
AMPL since 2026-10-06Filed yesterday · 1 day of post-filing data
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Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
Sell
Code S
Identifier
0001610717-26-000427
Class A Common Stock
Transaction date
Oct 02, 2026
Filed Oct 06, 2026, 08:17 PM · 4d delay
Shares
70.0k sh
$14.52 per share
Estimated value
-$1.01M
Computed from shares × price
Holdings after
0 sh
Indirect · By Spouse

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Large Sale Repeat Seller 10b5-1 Detected
-10score
Filing-only score

-10

Compact filing score computed from stored Form 4 facts. Version v1.

Mixed or weak signal

This filing has a negative filing-only score. It may be less informative as an insider-activity signal and needs extra context.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

CEO and President

Officer YesDirector Yes10% YesOther No
Footnotes & amended
  1. F1

    The Class B Common Stock is convertible at any time at the option of the holder into the Issuer's Class A Common Stock on a one-to-one basis. The Class B Common Stock will convert automatically into s…

  2. F2

    The sales reported were effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person's spouse on June 11, 2026.

  3. F3

    This transaction was executed in multiple trades at prices ranging from $14.4500 to $14.6700. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes…

Original filing · 0001610717-26-000427
Related transactions

0 other filings

Same reporting owner
Recent company activity

0 recent txs

AMPL