Insider trade

Officer sold ~$13K of BLFS shares in the open market

Traded Dec 9, 2025 · Filed Dec 17, 2025

~$13K
Approx. value · 519 sh @ $25.13: 192K
Holds after · shares reported: +56.0%
stock since the trade · S&P 500 +13.4%, $24.75 → $38.61 on Oct 5

Why it stands out

BioLife Solutions's Chief Quality and Operations sold $13K of BioLife Solutions shares. The filing says it was made under a pre-arranged trading plan.

Written from the filing's own figures. OQRO describes what was reported and never tells you what to buy or sell

View the official recordSEC Form 4 — Statement of Changes in Beneficial Ownership

All the details

Dates, kept separate

Transaction date: Dec 9, 2025
Reporting period: Not applicable
Filed with the SEC: Dec 17, 2025

Officer<$25KPre-arranged plan referenced

Context

Classification

open market sale

Code S — open-market or private sale

Absolute commitment

~$13,042

Shares × reported transaction price

Timing vs results

33 days after results of Nov 6, 2025, 34 days before results of Jan 12, 2026

Results dates are the company's own 8-K (Item 2.02). Many companies only let insiders trade in a window after results

Planned / mechanical clue

Footnote references a pre-arranged trading plan (Rule 10b5-1)

Only flagged when a footnote says so; never inferred

After it was reported

After	Stock	S&P 500	Difference
7 days	−1.7%	+2.0%	−3.8%
30 days	−2.3%	+0.2%	−2.5%
90 days	−24.6%	−2.2%	−22.3%
180 days	+4.0%	+10.9%	−6.9%

Past results only. Not a forecast.

Source receipt

Record ID: 0001628280-25-057719
Filed / recorded: Dec 17, 2025, 10:25 PM UTC
Added to OQRO: Oct 6, 2026, 10:14 PM UTC
Parser: form4-xml-v2
Data quality: Verified: identifiers matched exactly
Issuer: BIOLIFE SOLUTIONS INC
Issuer CIK: 834365
Ticker: BLFS
Reporting person: Karen A. Foster
Relationship: Officer
Officer title: Chief Quality and Operations
Security: Common Stock
Table: Non-derivative (Table I)
Transaction date: Dec 9, 2025
Transaction code: S
Shares / units: 519
Price per share: $25.13
Acquired / disposed: Disposed (D)
Shares owned after: 192,319
Ownership form: Direct
Amendment: No

Footnotes from the filing

The sale reported herein was made pursuant to a Rule 10b5-1 (c) trading plan adopted by the reporting person effective as of 03-08-2024 to satisfy tax withholding obligations in connection with the vesting of shares of restricted stock.

Around the same time

Troy Wichterman (Chief Financial Officer) sold ~$25K of BioLife Solutions, Inc.

Scheduled in advanceFiled 9mo ago

Karen A. Foster (Chief Quality and Operations) sold ~$8.6K of BioLife Solutions, Inc.

Scheduled in advanceFiled 9mo ago

Sarah Aebersold (Chief Human Resources Officer) sold ~$6.2K of BioLife Solutions, Inc.

Scheduled in advanceFiled 9mo ago