SEC Form 4 reporting owner

Wichterman Troy

Wichterman Troy has filed 15 Form 4 transactions reported between November 25, 2025 and September 18, 2026, as Chief Financial Officer of BIOLIFE SOLUTIONS INC.

Name as filed: Wichterman Troy

Open-market buys, 24 mo

None

reported

Open-market sales, 24 mo

$851K

5 lines

Companies

with Form 4 filings

Latest transaction

Sep 18, 2026

transaction date

Roles and reported holdings

BLFSBIOLIFE SOLUTIONS INC
Nov 25, 2025 – Sep 18, 2026
Chief Financial Officer
Held directly211,286 sh as of Sep 18, 2026 · Form 4
24 months: $851K sold

Transaction history

All 15 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

Date	Company	Type	Shares	Price	Value	Owned after	Filing
Sep 18, 2026	BLFSChief Financial Officer	Shares withheld for tax or exercise priceCode F · direct	937	$36.69	$34K@ $36.69	211,286	Form 4
Sep 8, 2026	BLFSChief Financial Officer	Shares withheld for tax or exercise priceCode F · direct	1,026	$35.38	$36K@ $35.38	212,223	Form 4
Jul 7, 2026	BLFSChief Financial Officer	Shares withheld for tax or exercise priceCode F · direct	844	$27.79	$23K@ $27.79	213,249	Form 4
Jun 18, 2026	BLFSChief Financial Officer	Shares withheld for tax or exercise priceCode F · direct	937	$26.04	$24K@ $26.04	214,093	Form 4
Jun 8, 2026	BLFSChief Financial Officer	Shares withheld for tax or exercise priceCode F · direct	1,026	$26.10	$27K@ $26.10	215,030	Form 4
Apr 8, 2026	BLFSChief Financial Officer	Shares withheld for tax or exercise priceCode F · direct	844	$19.27	$16K@ $19.27	216,056	Form 4
Mar 19, 2026	BLFSChief Financial Officer	Shares withheld for tax or exercise priceCode F · direct	3,749	$19.12	$72K@ $19.12	216,900	Form 4
Mar 3, 2026	BLFSChief Financial Officer	Open-market saleCode S · direct	588	$20.74	$12K@ $20.74	220,649	Form 4
Feb 24, 2026	BLFSChief Financial Officer	Shares withheld for tax or exercise priceCode F · direct	25,525	$22.65	$578K@ $22.65	221,237	Form 4
Feb 24, 2026	BLFSChief Financial Officer	Grant or awardCode A · direct	64,866	—	—	246,762	Form 4
Feb 24, 2026	BLFSChief Financial Officer	Grant or awardCode A · direct	31,150	—	—	181,896	Form 4
Jan 6, 2026	BLFSChief Financial Officer	Open-market saleCode S · direct	990	$25.59	$25K@ $25.59	150,746	Form 4
Dec 9, 2025	BLFSChief Financial Officer	Open-market saleCode S · direct	1,033	$25.13	$26K@ $25.13	151,736	Form 4
Dec 4, 2025	BLFSChief Financial Officer	Open-market saleCode S · direct	30,000	$25.72	$772K@ $25.72	152,769	Form 4
Nov 25, 2025	BLFSChief Financial Officer	Open-market saleCode S · direct	584	$26.74	$16K@ $26.74	182,769	Form 4

How this page is built

Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.

Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares owned after the latest purchase, sale, gift or tax-withholding line, shown separately for direct and indirect ownership; an indirect figure is one holding line, not a total across every trust or entity.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.