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SC 13D ·Filed Oct 2, 2026

ATER

Aterian, Inc.
BEARISH
Impact 7/10
Horizonimmediate Processed24d ago SEC0001437749-26-031910
Activist investor acquires 5%+ stake
Actionable Insight ▼ Bearish

This is a de facto change of control at a deeply distressed price (~$0.05/share implied). The new controlling group has board representation and can dictate strategy. Watch for potential reverse stock split to cure the Nasdaq bid price deficiency, further dilutive issuances, or a sale of the remaining shell. The stock is likely to trade at a significant discount to any residual asset value given the massive overhang and the group's low cost basis.

DirectionBearish
Confidencehigh
Horizonimmediate
Latest settled — T+5d ⚠ clustered
ATER ▼ -4.41% at T+5d
SHORT call ✓ call won +4.41% · α vs SPY +4.83% · entry $0.6356 → $0.6076
Next anchor: T+20d in 4d
Latest observation: T+14 -20.48% FF3 residual α
Entry = T+0 close
Oct 2, 2026
via day close
T+1d
+1.09%
call -1.09% · α -0.54%
$0.6425
settled 21d ago
T+5d
-4.41%
call +4.41% · α +4.83%
$0.6076
settled 17d ago
T+20d
Pending
in 4d
T+60d
Pending
in 2mo

Price Chart

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Executive Summary

A group of 19 non-U.S. investors, led by Chang Woei Jiann, acquired control of Aterian by purchasing convertible preferred shares from director David Elliot Lazar for $12 million. The preferred shares convert into approximately 241.9 million common shares, representing ~92.5% of the fully diluted outstanding stock. The transaction closed on September 25, 2026, and resulted in a board seat for the purchasers' designee, William H. Crampton, replacing a resigned director. The filing is a Schedule 13D by Chang Woei Jiann, who now beneficially owns ~10% of the outstanding common stock, but the broader group collectively controls the company.

Key Financial Metrics

Stake
10%
Stake Value
$1.3M
Investor
Chang Woei Jiann

Key Facts

  • 19 non-U.S. investors purchased convertible preferred shares from director David Elliot Lazar for $12 million total.
  • The preferred shares convert into 241,861,970 common shares, representing ~92.5% of the fully diluted outstanding stock.
  • Chang Woei Jiann now beneficially owns 26,121,180 common shares, or ~10% of the outstanding common stock.
  • William H. Crampton was appointed to the board as the purchasers' designee, replacing Avraham Ben-Tzvi.
  • Aterian received a Nasdaq bid price deficiency notice on September 2, 2026, with a 180-day cure period ending March 1, 2027.
  • The company completed an asset sale to Trademark Global, LLC on April 27, 2026, and is now a post-asset-sale entity with reduced operations.

Financial Impact

Massive dilution: the conversion of the purchased preferred shares adds ~241.9 million new common shares, increasing the fully diluted share count by ~925% from the pre-conversion base of ~26.1 million shares. The $12 million purchase price implies an effective price of ~$0.05 per underlying common share.

dilutionshare countcontrol

Risk Factors

  • Massive dilution: the conversion of preferred shares increases the share count by ~925%, severely diluting existing common shareholders.
  • Nasdaq delisting risk: the company received a bid price deficiency notice and has until March 1, 2027 to cure.
  • Control by a group of non-U.S. investors with no disclosed track record or activist history creates significant governance uncertainty.
  • Post-asset-sale company has limited ongoing business operations and may be a shell with minimal assets.

Investment Themes

Consumer & Retail

Documents Analyzed

This report is based on 4 SEC documents filed with EDGAR.

DocumentAccession Number
SC 13D Filing (Primary)0001437749-26-031910
Document: 0001437749-26-031910-index-headers.html0001437749-26-031910
Document: 0001437749-26-031910-index.html0001437749-26-031910
Document: 0001437749-26-031910.txt0001437749-26-031910
17 reports for ATER
Performance horizon
57% Hit rate @ T+5 4 of 7 directional calls Went positive at some point 5 of 7 best @ T+5▲ +65.00%Jul 20, 2026
Filters
Rows
Reports for ATER — sortable, filterable
TypeNow
Oct 23, 2026
3d ago
8-K
NEUTRAL ★ 3/10
$0.6300awaiting T+5—$0.6622 (+5.11%)
Oct 5, 2026
21d ago
8-K
BEARISH ★ 7/10
$0.6425 $0.5705▲ +11.21%▲ +11.07%$0.6622 (−3.07%)
Oct 2, 2026
24d ago
SC 13D
BEARISH ★ 7/10
$0.6356 $0.6076▲ +4.41%▲ +4.83%$0.6622 (−4.19%)
Oct 2, 2026
24d ago
SC 13D
BEARISH ★ 7/10
$0.6356 $0.6076▲ +4.41%▲ +4.83%$0.6622 (−4.19%)
Sep 29, 2026
26d ago
SC 13D/A
BEARISH ★ 7/10
$0.5866 $0.6109▼ −4.14%▼ −2.23%$0.6622 (−12.89%)
Jul 29, 2026
12w ago
3
NEUTRAL ★ 1/10
$0.3900 $0.4610▲ +18.21%▲ +14.58%$0.6622 (+69.79%)
Jul 20, 2026
14w ago
S-3
BEARISH ★ 6/10
$1.03 $0.3605▲ +65.00%▲ +63.77%$0.6622 (+35.71%)
Jul 13, 2026
15w ago
DEFA14A
MIXED ★ 6/10
$1.19 $1.30▲ +9.24%▲ +10.03%$0.6622 (−44.35%)
Jul 8, 2026
15w ago
Press Release
BULLISH ★ 6/10
$1.19 $1.28▲ +7.56%▲ +7.69%$0.6622 (−44.35%)
Jul 6, 2026
16w ago
DEFA14A
NEUTRAL ★ 5/10
$1.31 $1.15▼ −12.21%▼ −12.70%$0.6622 (−49.45%)
Showing 10 of 17

US Market Status

Market Closed — Opens Tue (16h 2m)

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Report published Oct 2, 2026