Foster Karen A., Chief Quality and Operations at BioLife Solutions Inc. ($BLFS), sold shares on the open market 14 times over the last year, totaling $2.25 million. Her most recent sale occurred on March 9, 2026. These sales rank her 3,270th among 11,678 insiders by value, below the average of $8.59 million per seller and 6.37 transactions. She made no open market purchases in this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 23, 2026 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 2577 | $19.17 | 108,758.0000 | 48,723,535 | 2.31% | 0.01% |
| March 19, 2026 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | F | Common Stock | 1907 | $19.12 | 111,335.0000 | 48,723,535 | 1.68% | 0.00% |
| March 5, 2026 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 96923 | $20.15 | 113,742.0000 | 48,723,535 | 46.01% | 0.20% |
| March 9, 2026 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 500 | $20.00 | 113,242.0000 | 48,723,535 | 0.44% | 0.00% |
| March 3, 2026 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 418 | $20.74 | 210,665.0000 | 48,723,535 | 0.20% | 0.00% |
| Feb. 24, 2026 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | A | Common Stock | 32112 | $0.00 | 224,096.0000 | 48,723,535 | 16.73% | 0.07% |
| Feb. 24, 2026 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | F | Common Stock | 13013 | $22.65 | 211,083.0000 | 48,723,535 | 5.81% | 0.03% |
| Jan. 6, 2026 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 335 | $25.59 | 191,984.0000 | 48,723,535 | 0.17% | 0.00% |
| Dec. 9, 2025 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 519 | $25.13 | 192,319.0000 | 48,723,535 | 0.27% | 0.00% |
| Nov. 25, 2025 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 415 | $26.74 | 192,838.0000 | 48,723,535 | 0.21% | 0.00% |
| Oct. 9, 2025 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 419 | $27.36 | 193,253.0000 | 48,723,535 | 0.22% | 0.00% |
| Sept. 11, 2025 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 511 | $26.83 | 193,672.0000 | 46,067,073 | 0.26% | 0.00% |
| Aug. 26, 2025 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 413 | $25.44 | 194,183.0000 | 46,067,073 | 0.21% | 0.00% |
| July 7, 2025 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 400 | $22.27 | 194,596.0000 | 46,067,073 | 0.21% | 0.00% |
| June 10, 2025 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 320 | $23.70 | 194,996.0000 | 46,067,073 | 0.16% | 0.00% |
| May 28, 2025 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 251 | $22.46 | 195,316.0000 | 46,067,073 | 0.13% | 0.00% |
| April 9, 2025 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 286 | $20.11 | 195,567.0000 | 46,067,073 | 0.15% | 0.00% |
| April 1, 2025 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 7869 | $22.66 | 195,853.0000 | 46,067,073 | 3.86% | 0.02% |
| March 18, 2025 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | A | Common Stock | 19099 | $0.00 | 174,011.0000 | 46,067,073 | 12.33% | 0.04% |
| March 18, 2025 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | A | Common Stock | 29711 | $0.00 | 203,722.0000 | 46,067,073 | 17.07% | 0.06% |
| March 11, 2025 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 1331 | $25.00 | 154,912.0000 | 46,067,073 | 0.85% | 0.00% |
| March 3, 2025 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 324 | $25.46 | 156,243.0000 | 46,067,073 | 0.21% | 0.00% |
| Feb. 12, 2025 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 78 | $26.54 | 156,567.0000 | 46,067,073 | 0.05% | 0.00% |
| Jan. 6, 2025 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 328 | $27.02 | 156,645.0000 | 46,067,073 | 0.21% | 0.00% |
| Nov. 26, 2024 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 252 | $27.20 | 156,973.0000 | 46,175,345 | 0.16% | 0.00% |
| Nov. 12, 2024 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 66 | $26.34 | 157,225.0000 | 46,175,345 | 0.04% | 0.00% |
| Oct. 30, 2024 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 277 | $23.15 | 157,291.0000 | 46,175,345 | 0.18% | 0.00% |
| Aug. 21, 2024 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 96 | $25.61 | 157,835.0000 | 43,719,185 | 0.06% | 0.00% |
| July 18, 2024 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 240 | $22.50 | 157,931.0000 | 43,719,185 | 0.15% | 0.00% |
| Sept. 16, 2024 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 267 | $25.12 | 157,568.0000 | 43,719,185 | 0.17% | 0.00% |
| May 29, 2024 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 408 | $21.78 | 158,171.0000 | 43,719,185 | 0.26% | 0.00% |
| May 17, 2024 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 85 | $22.18 | 158,579.0000 | 43,719,185 | 0.05% | 0.00% |
| April 18, 2024 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 481 | $15.31 | 158,664.0000 | 43,719,185 | 0.30% | 0.00% |
| March 27, 2024 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 395 | $17.99 | 159,145.0000 | 43,719,185 | 0.25% | 0.00% |
| March 8, 2024 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | A | Common Stock | 20651 | $0.00 | 144,591.0000 | 43,719,185 | 16.66% | 0.05% |
| March 12, 2024 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 5177 | $16.60 | 159,540.0000 | 43,719,185 | 3.14% | 0.01% |
| March 11, 2024 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 319 | $17.42 | 164,717.0000 | 43,719,185 | 0.19% | 0.00% |
| March 8, 2024 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | A | Common Stock | 20445 | $0.00 | 165,036.0000 | 43,719,185 | 14.14% | 0.05% |
| Feb. 21, 2024 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 87 | $17.35 | 123,940.0000 | 43,719,185 | 0.07% | 0.00% |
| Jan. 19, 2024 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 1198 | $16.76 | 124,027.0000 | 43,719,185 | 0.96% | 0.00% |
| Jan. 2, 2024 | BIOLIFE SOLUTIONS INC | $BLFS | Foster Karen A. | Chief Quality and Operations | S | Common Stock | 601 | $16.75 | 125,225.0000 | 43,719,185 | 0.48% | 0.00% |