---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-23-034715"
form_type: "8-K"
ticker: "BLFS"
cik: "0000834365"
company_name: "BIOLIFE SOLUTIONS INC"
filed_at: "2023-10-19T23:59:59+00:00"
generated_at: "2026-06-09T21:24:46.009459+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# BioLife Solutions: Casdin Partners ups stake to 19.5% with $10.4M private placement

## Summary
- Sold 927,165 new shares to Casdin Partners at $11.19/share, raising ~$10.4M.
- Casdin Partners' total ownership rises to ~19.5% of outstanding common stock post-placement.
- Transaction closed immediately on October 19, 2023; registration statement to be filed within 30 days.
- Issuance is below 20% threshold, so no shareholder vote required under Nasdaq listing rules.

## SEC filing metadata
- accession: 0001628280-23-034715
- form_type: 8-K
- ticker: BLFS
- cik: 0000834365
- company_name: BIOLIFE SOLUTIONS INC
- filed_at: 2023-10-19T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 1.01, 3.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/834365/000162828023034715/0001628280-23-034715-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/834365/000162828023034715/blfs-20231019.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-23-034715
- JSON: https://secwatch.observer/filing/0001628280-23-034715.json
- Plain text: https://secwatch.observer/filing/0001628280-23-034715.txt

## Key facts
- Material Agreements
  BIOLIFE SOLUTIONS INC entered into Securities Purchase Agreement with Casdin Partners Master Fund, L.P. valued at $10,374,976.35 (effective 2023-10-19).
  - Action: entry
  - Agreement: equity purchase
  - Counterparty: Casdin Partners Master Fund, L.P.
  - Value: $10,374,976.35
  - Effective: 2023-10-19
  source text: On October 19, 2023, BioLife Solutions, Inc. (the “Company”) entered into a Securities Purchase Agreement (the “Purchase Agreement”) with Casdin Partners Master Fund, L.P. (the “Purchaser”), whereby the Company will sell, and the Purchaser will purchase, 927,165 shares of common stock of the Company, par value $0.001 per share (the “Securities”), at a purchase price of $11.19 per share for an aggregate purchase price of $10,374,976.35
  evidence_url: https://www.sec.gov/Archives/edgar/data/834365/000162828023034715/0001628280-23-034715-index.htm

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