---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-26-022087"
form_type: "8-K"
ticker: "MBRX"
cik: "0001659617"
company_name: "Moleculin Biotech, Inc."
filed_at: "2026-06-30T12:29:53+00:00"
generated_at: "2026-06-30T12:35:20.510756+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Moleculin Biotech reports warrant exercise for $2.7M; shares outstanding rise to 7.07M

## Summary
- Warrants to purchase 1,361,500 shares exercised, generating gross proceeds of ~$2.7 million.
- As of June 29, 2026, common shares outstanding total 7,065,000.
- Corporate presentation posted on company website; no material updates disclosed in filing.

## SEC filing metadata
- accession: 0001437749-26-022087
- form_type: 8-K
- ticker: MBRX
- cik: 0001659617
- company_name: Moleculin Biotech, Inc.
- filed_at: 2026-06-30T12:29:53+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 7.01, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1659617/000143774926022087/0001437749-26-022087-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1659617/000143774926022087/mbrx20260629_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-26-022087
- JSON: https://secwatch.observer/filing/0001437749-26-022087.json
- Plain text: https://secwatch.observer/filing/0001437749-26-022087.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.