David E. Lazar - 24 Sep 2026 Form 4 Insider Report for Aterian, Inc. (ATER)

Reporting relationship: Chief Executive Officer, Director, Former 10% Owner
Issuer ticker: ATER
Reported as of: 24 Sep 2026
Net transaction value: -$269,730
SEC form: 4
Accepted by SEC: 29 Sep 2026, 21:29:21 UTC
Prior SEC filing: 07 Aug 2026
Source filing: View source filing
Reporting owner signature: /s/ David E. Lazar

Key filing fact

David E. Lazar filed Form 4 for Aterian, Inc. (ATER) on 29 Sep 2026.

Key facts

This page summarizes David E. Lazar's Form 4 filing for Aterian, Inc. (ATER).
4 reported transactions and 3 derivative rows are listed below.
Accepted by SEC: 29 Sep 2026, 21:29.

Change

Previous filing in this sequence was filed on 07 Aug 2026.
Current net transaction value: -$269,730.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001932843 Primary reporting owner

Lazar David E.

Relationship: Chief Executive Officer, Director, Former 10% Owner
Address: PH THE TOWERS, TOWER, 100, APT 44, WINSTON CHURCHILL, PANAMA CITY, PANAMA
Signature: /s/ David E. Lazar
Signature date: 29 Sep 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ATER transaction

Common Stock

Conversion of derivative security

Transaction value
Shares: +1,300,530
Change %: +19%
Price: $0.000000^*
Shares after: 8,038,030
Date: 24 Sep 2026
Ownership: Direct
Footnotes: F1

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

ATER transaction Derivative

Series AAA Convertible Non-Redeemable Preferred Stock

Sale

Transaction value
Shares: -1,750,000
Change %: -100%
Price: $6.70^*
Shares after: 0
Date: 25 Sep 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 236,425,000
Exercise price: $0.0148
Footnotes: F2, F3

ATER transaction Derivative

Series AA Convertible Non-Redeemable Preferred Stock

Sale

Transaction value: $269,730
Shares: -706,100
Change %: -100%
Price: $0.3820
Shares after: 0
Date: 25 Sep 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 5,436,970
Exercise price: $0.2597
Footnotes: F2, F3

ATER transaction Derivative

Series AA Convertible Non-Redeemable Preferred Stock

Conversion of derivative security

Transaction value
Shares: -168,900
Change %: -19%
Price: $0.000000^*
Shares after: 706,100
Date: 24 Sep 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,300,530
Exercise price: $0.000000
Footnotes: F1, F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

On September 25, 2026, the Reporting Person converted 168,900 shares of the Series AA Convertible Non-Redeemable Preferred Stock (the "Series AA Preferred Shares") for no additional consideration.

Footnote F2

Each of the Series AA Preferred Shares and the Series AAA Convertible Non-Redeemable Preferred Stock (the "Series AAA Preferred Shares") are perpetual and therefore have no expiration date.

Footnote F3

On September 25, 2026, the Reporting Person sold 706,100 Series AA Preferred Shares and 1,750,000 Series AAA Preferred Shares to multiple purchasers for an aggregate purchase price of $12,000,000, pursuant to a Securities Purchase Agreement. The aggregate purchase price was not allocated between the Series AA Preferred Shares and the Series AAA Preferred Shares in the Securities Purchase Agreement; the per-share prices reported reflect an allocation of the aggregate purchase price between the two series pro rata based on the number of shares of Common Stock underlying each series.