# BIOLARGO INC (BLGO)

> Institutional ownership reported to the SEC as of Q2 2026, from Form 13F filings. Source: https://holderbook.com/stocks/BLGO/

- Reporting holders: 1
- Reported value: $13.4K
- Shares held by institutions: 117,838 of 328,731,362 outstanding
- Held through calls: 0.0%
- Held through puts: 0.0%

A 13F reports long US equity positions only. Shorts, bonds, foreign listings and cash are not visible here, and positions are disclosed up to 45 days after the quarter ends.

## Largest holders

| Manager | Value | Shares | Share of their book | Quarters held |
|---|---|---|---|---|
| [FIRST AMERICAN TRUST, FSB](https://holderbook.com/funds/36066-first-american-trust-fsb/) | $13.4K | 117,838 | 0.0% | 31 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q2 2026 | 1 | $13.4K |
| Q1 2026 | 1 | $19.1K |
| Q4 2025 | 1 | $21.7K |
| Q3 2025 | 1 | $20.0K |
| Q2 2025 | 1 | $24.2K |
| Q1 2025 | 1 | $32.6K |
| Q4 2024 | 2 | $22.4K |
| Q3 2024 | 1 | $27.6K |
| Q2 2024 | 1 | $30.0K |
| Q1 2024 | 1 | $41.8K |
| Q4 2023 | 2 | $19.8K |
| Q3 2023 | 1 | $19.5K |