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424B4 ·Filed Apr 17, 2026

BLGO

BIOLARGO, INC.
BEARISH
Impact 6/10
Horizonweeks Processed6mo ago SEC0001437749-26-012700
Prospectus supplement
Actionable Insight ▼ Bearish

The significant dilution from warrant exercises combined with declining revenue and ongoing litigation creates substantial downside risk. The company's ability to continue as a going concern is in question, and traders should monitor the outcome of the Pooph litigation and the company's ability to secure additional financing.

DirectionBearish
Confidencehigh
Horizonweeks
Final — all horizons settled through T+60d ⚠ clustered
BLGO ▼ -25.33% at T+60d
SHORT call ✓ call won +25.33% · α vs SPY +32.11% · entry $0.1500 → $0.1120
Entry = T+0 close
Apr 17, 2026
via day close
T+1d
0.00%
call 0.00% · α -0.65%
$0.1500
settled 6mo ago
T+5d
+2.00%
call -2.00% · α -1.09%
$0.1530
settled 6mo ago
T+20d
-20.00%
call +20.00% · α +24.20%
$0.1200
settled 5mo ago
T+60d
-25.33%
call +25.33% · α +32.11%
$0.1120
settled 3mo ago

Executive Summary

This 424B4 filing relates to the offering of 31,730,651 shares of BioLargo common stock by selling stockholders upon exercise of warrants. The company will not receive proceeds from the stock sales but could receive up to $8.4 million if all warrants are exercised. The offering follows a significant revenue decline and ongoing litigation with a former major customer, Pooph Inc., which has raised substantial doubt about the company's ability to continue as a going concern.

Key Financial Metrics

Offering Size
$31.7M
Dilution
9%

Key Facts

  • 31,730,651 shares offered by selling stockholders upon exercise of warrants with average exercise price of $0.265
  • Company could receive up to $8,416,462 if all warrants are exercised
  • Company's revenue decreased 56% year-over-year to $7.765 million for 2025
  • Company reported net loss of $15.189 million for 2025, up from $4.347 million in 2024
  • Auditors' report includes going concern doubt due to recurring losses and negative cash flow
  • Company is engaged in litigation with former largest customer Pooph Inc. over unpaid royalties and product payments totaling $3.8 million

Financial Impact

Dilution of approximately 9% of outstanding shares if all warrants are exercised

dilutioncash flowrevenuenet loss

Risk Factors

  • Substantial doubt about going concern status due to recurring losses
  • Ongoing litigation with former major customer could result in material losses
  • Significant dilution from warrant exercises
  • Continuing revenue decline and negative cash flow

Market Snapshot

Exchange
OTC
Sector
Chemicals & Allied Products

Investment Themes

Materials & Mining

Documents Analyzed

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

DocumentAccession Number
424B4 Filing (Primary)0001437749-26-012700
Document: 0001437749-26-012700-index-headers.html0001437749-26-012700
Document: 0001437749-26-012700-index.html0001437749-26-012700
Document: 0001437749-26-012700.txt0001437749-26-012700
6 reports for BLGO
Performance horizon

Track record builds as more directional reports settle.

Filters
Rows
Reports for BLGO — sortable, filterable
TypeNow
Oct 19, 2026
7d ago
DEF 14A
BEARISH ★ 5/10
$0.0700awaiting T+60—$0.0680 (+2.86%)
Sep 11, 2026
6w ago
8-K
NEUTRAL ★ 2/10
$0.1000awaiting T+60—$0.0680 (−32.00%)
May 4, 2026
25w ago
8-K
NEUTRAL ★ 1/10
$0.1600 $0.1117▼ −30.19%▼ −32.04%$0.0680 (−57.50%)
Apr 17, 2026
27w ago
424B4
BEARISH ★ 6/10
$0.1500 $0.1120▲ +25.33%▲ +32.11%$0.0680 (+54.67%)
Apr 17, 2026
27w ago
424B4
BEARISH ★ 6/10
$0.1500 $0.1120▲ +25.33%▲ +32.11%$0.0680 (+54.67%)
Mar 5, 2026
33w ago
8-K
BEARISH ★ 6/10
$0.1700 $0.1200▲ +29.41%▲ +40.71%$0.0680 (+60.00%)
Showing 6 of 6

US Market Status

Market Closed — Opens Tue (15h 56m)

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Report published Apr 17, 2026