Karen A Foster

Other Executive · BIOLIFE SOLUTIONS INC

Rank #14,386 SEC EDGAR (United States) ↗ Files from United States

Details

Officer of the companyMedical Devices & DiagnosticsBLFSSEC CIK 0001683151

Computed from SEC EDGAR filings and closing prices — not copied from any wealth ranking. Dataset . How we calculate this.

Disclosed holdings
$3.8M
1-day change
▼ 0.79%
Positions on file
1
issuers disclosed in Forms 3/4/5 and Schedules 13D/G

Disclosed holdings over time 53 weekly points

What the 1 currently disclosed position would have been worth at each week’s closing price. A rising line means the shares got more valuable, not that this person bought more.

How the line is built

Share counts are as last reported to the SEC and held constant; only prices move.

2025-09-05$2.0M – $4.0M2026-09-04

Insider activity Apr 18, 2024 – Mar 23, 2026

Karen A Foster is recorded in filings to the U.S. SEC via EDGAR as officer of the company, and reported 33 transactions between Apr 18, 2024 and Mar 23, 2026. The buy and sell totals below count only codes P, S.

Why the other codes are excluded

Share awards (A), shares withheld to pay tax (F), option exercises (M) and gifts (G) also appear in the table, but they are consequences of a pay package or a private transfer, not a decision to buy or sell on the open market. Counting them would turn this into a compensation ranking.

Open-market buys (code P)
None
0 purchases on file
Open-market sales (code S)
$2.40M
28 sales on file priced rows only
All reported transactions
33
every code, including awards and exercises
Pattern
Net seller in the final 12 months of the window
last 12 months of the window

Events from filings

Detected automatically in the filings linked below. Each headline is built from the numbers in those filings, not written by a model. Newest first; events older than 45 days stay listed and are marked as older.

Karen A Foster sold 96,923 BIOLIFE SOLUTIONS INC (BLFS) shares for $1,952,998 on Mar 5, 2026

Large trade for this person

Flagged because this trade was large compared with this person’s own earlier open-market trades in the same currency — not because it is large in absolute terms. A trade that is routine for one insider can be flagged for another.

Karen A Foster sold 96,923 BIOLIFE SOLUTIONS INC (BLFS) shares for $1,952,998 on Mar 5, 2026
Date Insider Transaction Shares Price Value Filing
Mar 5, 2026 Karen A Foster S Open-market sale 96,923 held after: 113,742 $20.15 $1,952,998 SEC filing ↗

Source: SEC EDGAR (United States); every row links to where it was published. Event computed Sep 14, 2026.

Karen A Foster sold 96,923 BIOLIFE SOLUTIONS INC (BLFS) shares for $1,952,998 on Mar 5, 2026

Unusual change in a direct holding

Flagged because the change that day in the shares this person holds directly was unusually large compared with their own earlier changes. The rows below are the open-market trades reported that day; under each share count is the balance the filing reports after that line.

Karen A Foster sold 96,923 BIOLIFE SOLUTIONS INC (BLFS) shares for $1,952,998 on Mar 5, 2026
Date Insider Transaction Shares Price Value Filing
Mar 5, 2026 Karen A Foster S Open-market sale 96,923 held after: 113,742 $20.15 $1,952,998 SEC filing ↗

Source: SEC EDGAR (United States); every row links to where it was published. Event computed Sep 14, 2026.

Karen A Foster sold 7,869 BIOLIFE SOLUTIONS INC (BLFS) shares for $178,312 on Apr 1, 2025

Large trade for this person

Flagged because this trade was large compared with this person’s own earlier open-market trades in the same currency — not because it is large in absolute terms. A trade that is routine for one insider can be flagged for another.

Karen A Foster sold 7,869 BIOLIFE SOLUTIONS INC (BLFS) shares for $178,312 on Apr 1, 2025
Date Insider Transaction Shares Price Value Filing
Apr 1, 2025 Karen A Foster S Open-market sale 7,869 held after: 195,853 $22.66 $178,312 SEC filing ↗

Source: SEC EDGAR (United States); every row links to where it was published. Event computed Sep 14, 2026.

Reported transactions

Price 0.00 is a real reported figure on gifts (G) and share awards (A) — not a missing number. The 25 most recent rows are grouped into 24 lines by date, company and transaction type — open a line to see every lot with its own source link. We hold 33 on file in total. See the full history on EDGAR ↗

How to read this list

Every row is one line of one Form 4 or Form 5, with the filing it came from. Where the record carries no price at all we leave the cell empty instead of guessing one.

The shares and money on a grouped line add up only the lots listed inside that line, and only when every one of them carries the figure. Where a group mixes more than one reporting currency we leave the money blank rather than convert — no source publishes the rate that conversion would need.

  1. BIOLIFE SOLUTIONS INC BLFS S Open-market sale 2,577 shares $49.4K at $19.17 SEC filing ↗
  2. BIOLIFE SOLUTIONS INC BLFS F Shares withheld for taxesnot a buy/sell decision 1,907 shares $36.5K at $19.12 SEC filing ↗
  3. BIOLIFE SOLUTIONS INC BLFS S Open-market sale 500 shares $10.0K at $20.00 SEC filing ↗
  4. BIOLIFE SOLUTIONS INC BLFS S Open-market sale 96,923 shares $1.95M at $20.15 SEC filing ↗
  5. BIOLIFE SOLUTIONS INC BLFS S Open-market sale 418 shares $8.7K at $20.74 SEC filing ↗
  6. BIOLIFE SOLUTIONS INC BLFS A Grant or awardnot a buy/sell decisionreported at zero 32,112 shares $0 at $0.00 SEC filing ↗
  7. BIOLIFE SOLUTIONS INC BLFS F Shares withheld for taxesnot a buy/sell decision 13,013 shares $294.7K at $22.65 SEC filing ↗
  8. BIOLIFE SOLUTIONS INC BLFS S Open-market sale 335 shares $8.6K at $25.59 SEC filing ↗
  9. BIOLIFE SOLUTIONS INC BLFS S Open-market sale 519 shares $13.0K at $25.13 SEC filing ↗
  10. BIOLIFE SOLUTIONS INC BLFS S Open-market sale 415 shares $11.1K at $26.74 SEC filing ↗
  11. BIOLIFE SOLUTIONS INC BLFS S Open-market sale 419 shares $11.5K at $27.36 SEC filing ↗
  12. BIOLIFE SOLUTIONS INC BLFS S Open-market sale 511 shares $13.7K at $26.83 SEC filing ↗
  13. BIOLIFE SOLUTIONS INC BLFS S Open-market sale 413 shares $10.5K at $25.44 SEC filing ↗
  14. BIOLIFE SOLUTIONS INC BLFS S Open-market sale 400 shares $8.9K at $22.27 SEC filing ↗
  15. BIOLIFE SOLUTIONS INC BLFS S Open-market sale 320 shares $7.6K at $23.70 SEC filing ↗
  16. BIOLIFE SOLUTIONS INC BLFS S Open-market sale 251 shares $5.6K at $22.46 SEC filing ↗
  17. BIOLIFE SOLUTIONS INC BLFS S Open-market sale 286 shares $5.8K at $20.11 SEC filing ↗
  18. BIOLIFE SOLUTIONS INC BLFS S Open-market sale 7,869 shares $178.3K at $22.66 SEC filing ↗
  19. BIOLIFE SOLUTIONS INC BLFS A Grant or award × 2not a buy/sell decisionreported at zero 48,810 shares $0
    The 2 lots that make up this line, each with the source behind it.
    Shares Price Value Filing
    19,099 $0.00reported at zero $0 SEC filing ↗
    29,711 $0.00reported at zero $0 SEC filing ↗
  20. BIOLIFE SOLUTIONS INC BLFS S Open-market sale 1,331 shares $33.3K at $25.00 SEC filing ↗
  21. BIOLIFE SOLUTIONS INC BLFS S Open-market sale 324 shares $8.2K at $25.46 SEC filing ↗
  22. BIOLIFE SOLUTIONS INC BLFS S Open-market sale 78 shares $2.1K at $26.54 SEC filing ↗
  23. BIOLIFE SOLUTIONS INC BLFS S Open-market sale 328 shares $8.9K at $27.02 SEC filing ↗
  24. BIOLIFE SOLUTIONS INC BLFS S Open-market sale 252 shares $6.9K at $27.20 SEC filing ↗

Disclosed holdings

Shares is the amount on the form; value is that amount times the closing price shown. Rows with no closing price are left blank, so they may add up to less than the headline figure.

What is not counted here

Each row is one filing you can open. Private companies, real estate, bonds and crypto are not in SEC insider filings and are therefore not counted here.

Equity positions disclosed to the SEC, with the source filing behind each row.
Issuer Ticker Security Shares Close Value Form Reported Filing
BIOLIFE SOLUTIONS INC BLFS Common Stock 108,758 $35.25 $3.8M 4 EDGAR ↗

Other insiders at the same companies

People who also file with the SEC at a company where Karen A Foster reports shares.

Sharing a filing does not mean they work together day to day — it means both names appear on the same issuer’s insider record.

Sources

The filings linked in the tables above are the sources for every figure on this page.

Think a number here is wrong? Open the linked filing and compare — how to report it.

Profile record last refreshed Sep 8, 2026.