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Home/Insiders/Foster Karen A.

Foster Karen A.

Insider

Insider
Total trades
31
Bought (open market)
$0
Sold (open market)
$2.3M
Tickers traded
1
Foster Karen A., Chief Quality and Operations officer, has demonstrated a consistent pattern of selling shares in BioLife Solutions Inc. (BLFS) over the past two years, with no recorded purchases. According to SEC Form 4 filings, Foster has executed 31 transactions totaling $2.63 million in sales, with 20 of those occurring in the most recent period. The largest single sale took place on March 5, 2026, when Foster disposed of shares worth $1.95 million, significantly outweighing smaller transactions such as the $49,401 sale on March 23, 2026, or the $8,669 transaction on March 3, 2026. Earlier activity included periodic sales, like the $29,474 disposition on February 24, 2026, and a series of smaller sales throughout 2025 and 2024, typically ranging between $1,000 and $30,000 per transaction. The filings also indicate several awards (coded "A") with no reported value, suggesting equity grants rather than open-market purchases. Foster’s trading history is exclusively tied to BLFS, with no diversification across other companies. The absence of buying activity and the sustained selling trend—particularly the accelerated pace in early 2026—reflect a clear divestment strategy. While the reasons for these sales are undisclosed, the data underscores a one-directional reduction in Foster’s holdings in BioLife Solutions over time.

AI-assisted summary

12-month activity

Monthly buy vs sell totals from Foster Karen A.'s Form 4 filings.

BuysSellsFilings with no price (gifts, grants)
Show data table
MonthBuysSellsFilings
October 2025$0$11K1
November 2025$0$11K1
December 2025$0$13K1
January 2026$0$9K1
February 2026$0$02
March 2026$0$2M5
April 2026$0$00
May 2026$0$00
June 2026$0$00
July 2026$0$00
August 2026$0$00
September 2026$0$00

Recent trades

Most recent Form 4 filings by Foster Karen A..

  • Foster Karen A.sold2,577 shares ofBLFSat $19.17$49KMar 23 · filed Mar 31Details
  • Foster Karen A.tax-withheld1,907 shares ofBLFSat $19.12$36KMar 19 · filed Mar 23Details
  • Foster Karen A.sold500 shares ofBLFSat $20$10KMar 9Details

Explore insider screeners

Latest CEO & CFO PurchasesLatest CEO & CFO SalesDirector PurchasesOfficer PurchasesTop Purchases This WeekTop Sales This WeekTop Officer Buys (Month)10% Owner Filings10b5-1 Planned TradesDiscretionary TradesBuy/Sell RatiosPolitician-Insider Overlap
Foster Karen A.
sold
96,923 shares of
BLFS
at $20.15
$2MMar 5 · filed Mar 9Details
  • Foster Karen A.sold418 shares ofBLFSat $20.74$9KMar 3 · filed Mar 5Details
  • Foster Karen A.tax-withheld13,013 shares ofBLFSat $22.65$295KFeb 24 · filed Feb 26Details
  • Foster Karen A.granted32,112 shares ofBLFSFeb 24 · filed Feb 26Details
  • Foster Karen A.sold335 shares ofBLFSat $25.59$9KJan 6 · filed Jan 8Details
  • Foster Karen A.sold519 shares ofBLFSat $25.13$13KDec 9, 2025 · filed Dec 17, 2025Details
  • Foster Karen A.sold415 shares ofBLFSat $26.74$11KNov 25, 2025 · filed Nov 28, 2025Details
  • Foster Karen A.sold419 shares ofBLFSat $27.36$11KOct 9, 2025 · filed Oct 14, 2025Details
  • Foster Karen A.sold511 shares ofBLFSat $26.83$14KSep 11, 2025 · filed Sep 15, 2025Details
  • Foster Karen A.sold413 shares ofBLFSat $25.44$11KAug 26, 2025 · filed Aug 28, 2025Details
  • Foster Karen A.sold400 shares ofBLFSat $22.27$9KJul 7, 2025 · filed Jul 9, 2025Details
  • Foster Karen A.granted19,099 shares ofBLFSMar 18, 2025 · filed Mar 20, 2025Details
  • Foster Karen A.granted29,711 shares ofBLFSMar 18, 2025 · filed Mar 20, 2025Details
  • Foster Karen A.sold1,331 shares ofBLFSat $25$33KMar 11, 2025 · filed Mar 13, 2025Details
  • Foster Karen A.sold324 shares ofBLFSat $25.46$8KMar 3, 2025 · filed Mar 5, 2025Details
  • Foster Karen A.sold78 shares ofBLFSat $26.54$2KFeb 12, 2025 · filed Feb 14, 2025Details
  • Foster Karen A.sold328 shares ofBLFSat $27.02$9KJan 6, 2025 · filed Jan 8, 2025Details
  • View all 31 trades →