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ATER SCHEDULE 13D: Insider sale planned

Filed with the SEC on · accession 0001437749-26-031908

ATER filed a SCHEDULE 13D (schedule 13d) with the SEC on Oct 2, 2026. A report the company filed with the SEC (the US market regulator). The stock moved +7.4% by the first close after the filing.

Summary of the filing

Director David Elliot Lazar agreed to sell 706,100 Series AA and 1,750,000 Series AAA convertible preferred shares of Aterian to a group of purchasers, which convert into approximately 241.9 million common shares, or about 92.5% of the company on a fully diluted, as-converted basis.

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Key details

Aggregate gross proceeds from prior preferred stock investment by Lazar$7.0M
Underlying common shares issuable upon conversion of sold preferred shares$241.9M
IssuerAterian, Inc.
Placement agentJH Darbie & Co., Inc.
Escrow agentContinental Stock Transfer & Trust Company
Director of aterian, inc.David Elliot Lazar

How ATER stock reacted

Close before

$0.61

Oct 1, 2026

First close after

+7.40%

$0.65

5 trading days

-0.05%

$0.61

Since filing

+32.86%

$0.81

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Frequently asked questions

What did ATER file with the SEC on Oct 2, 2026?

ATER filed a SCHEDULE 13D (Insider sale planned). Director David Elliot Lazar agreed to sell 706,100 Series AA and 1,750,000 Series AAA convertible preferred shares of Aterian to a group of purchasers, which convert into approximately 241.9 million common shares, or about 92.5% of the company on a fully diluted, as-converted basis.

How do I read a SCHEDULE 13D?

A report the company filed with the SEC (the US market regulator). Start with the summary, then the key amounts and names. Compare it with the company’s earlier filings.

Why are SEC filings important?

Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A SCHEDULE 13D (schedule 13d): A report the company filed with the SEC (the US market regulator).

How did ATER stock react to this filing?

ATER closed at $0.61 before the filing and $0.65 on Oct 2, 2026 (+7.40%). Five trading days later: $0.61 (-0.05%).

Other ATER SEC filings

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