Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

← United States · Coverage record

US · SEC FORM 4

BIOLIFE SOLUTIONS INC

BLFS · Nasdaq · CIK 0000834365 · Healthcare

INSIDER SIGNAL

No active buy signal

0 qualifying P purchase groups
in the current 180-day scoring window

49 Form 4 transaction lines observed in the same window
3 sales · 46 option, withholding, award, gift or other lines

Last qualifying purchase2023-10-19 · Casdin Capital, LLC; Casdin Eli; Casdin Partners GP, LLC; Casdin Partners Master Fund, L.P. · $10.4M

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesLow
Buy signal statusInactive
Score anatomy

No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.

ClusterNot calculated
Purchase sizeNot calculated
RoleNot calculated
RecencyNot calculated
ConvictionNot calculated

Why is there no score?

  • No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
  • Sales and other Form 4 activity remain visible as context and do not create a negative score.

Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
Mathew Aby J.EVP & Chief Scientific Officer
○○○○○○○
Wichterman TroyChief Financial Officer
○○○○○○○
Werner SeanChief Technology Officer
○○○○○○
Berard ToddChief Marketing Officer
○○○○○○
DE GREEF RODERICKChief Executive Officer
○○○○
MOORE TIMOTHY L.Director
○
● Purchase▼ Sale○ Other

Showing the six most active owners; 5 additional owner(s) remain in Form 4 evidence.

Purchase breadth, concentration & cluster buying

These modules activate when qualifying purchases enter the 180-day research window.

SIGNAL HISTORY

No recorded active-signal snapshot

Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2023-10-19 · Casdin Capital, LLC; Casdin Eli; Casdin Partners GP, LLC; Casdin Partners Master Fund, L.P..

Recent Form 4 activity

0Purchases
42Sales
81Other Form 4 lines
87SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING3 sale line(s) · context only
OTHER46 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context provides additional background on recent price performance and risk. It does not affect the Insider Signal.

Price performance

1M
—
3M
—
6M
—
12M
—

Volatility & liquidity

Volatility
—
Beta
—
Avg daily value
—

Valuation

Market cap
—
P/E
—

Fundamentals

Profit margin
-4.8%
ROE
-1.2%
Industry
Electromedical & Electrotherapeutic Apparatus

Market data

Price data up to: 2026-10-18 · Price source: OpenBB/yfinance · From SEC filings: Profit margin, ROE · Fiscal year ended: 2025-12-31 · Status: PASS

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
3,999,252
Previous report
3,884,193
Avg daily volume
923,759
Days to cover
4.3

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2023-10-19Casdin Capital, LLC; Casdin Eli; Casdin Partners GP, LLC; Casdin Partners Master Fund, L.P.Purchase (P)Common Stock, par value $.001 per share927,165USD 11.19USD 10,374,976SEC filing ↗
2023-08-09Casdin Capital, LLC; Casdin Eli; Casdin Partners GP, LLC; Casdin Partners Master Fund, L.P.Purchase (P)Common Stock, par value $.001 per share58,465USD 13.20USD 771,738SEC filing ↗
2023-05-22Casdin Capital, LLC; Casdin Eli; Casdin Partners GP, LLC; Casdin Partners Master Fund, L.P.Purchase (P)Common Stock, par value $.001 per share24,973USD 21.86USD 545,910SEC filing ↗
2023-05-19Casdin Capital, LLC; Casdin Eli; Casdin Partners GP, LLC; Casdin Partners Master Fund, L.P.Purchase (P)Common Stock, par value $.001 per share50,000USD 22.55USD 1,127,500SEC filing ↗
2023-05-18Casdin Capital, LLC; Casdin Eli; Casdin Partners GP, LLC; Casdin Partners Master Fund, L.P.Purchase (P)Common Stock, par value $.001 per share30,000USD 21.76USD 652,800SEC filing ↗
2023-05-17Casdin Capital, LLC; Casdin Eli; Casdin Partners GP, LLC; Casdin Partners Master Fund, L.P.Purchase (P)Common Stock, par value $.001 per share30,027USD 21.30USD 639,575SEC filing ↗
2023-05-16Casdin Capital, LLC; Casdin Eli; Casdin Partners GP, LLC; Casdin Partners Master Fund, L.P.Purchase (P)Common Stock, par value $.001 per share15,000USD 20.19USD 302,850SEC filing ↗
2020-11-24Casdin Capital, LLC; Casdin Eli; Casdin Partners GP, LLC; Casdin Partners Master Fund, L.P.Purchase (P)Common Stock, par value $.001 per share1,600,000USD 22.50USD 36,000,000SEC filing ↗
2020-07-02Casdin Capital, LLC; Casdin Eli; Casdin Partners GP, LLC; Casdin Partners Master Fund, L.P.Purchase (P)Common Stock, par value $.001 per share305,583USD 14.50USD 4,430,954SEC filing ↗
2020-07-01Casdin Capital, LLC; Casdin Eli; Casdin Partners GP, LLC; Casdin Partners Master Fund, L.P.Purchase (P)Common Stock, par value $.001 per share685,000USD 14.50USD 9,932,500SEC filing ↗
2020-05-22Casdin Capital, LLC; Casdin Eli; Casdin Partners GP, LLC; Casdin Partners Master Fund, L.P.Purchase (P)Common Stock, par value $.001 per share476,191USD 10.50USD 5,000,006SEC filing ↗
2020-05-14Casdin Capital, LLC; Casdin Eli; Casdin Partners GP, LLC; Casdin Partners Master Fund, L.P.Purchase (P)Common Stock, par value $.001 per share1,904,762USD 10.50USD 20,000,001SEC filing ↗

Form 4 evidence

123 transaction lines in the latest 365-day window; 1,276 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-06Wichterman TroyTax withholding (F)Common Stock95,933USD 38.61USD 3,703,973SEC filing ↗
2026-10-06Wichterman TroyD (D)Common Stock256,000USD —USD —SEC filing ↗
2026-10-06Wichterman TroyAward / grant (A)Common Stock138,504USD —USD —SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-06Wichterman TroyTax withholding (F)Common Stock95,933USD 38.61USD 3,703,973SEC filing ↗
2026-10-06Wichterman TroyD (D)Common Stock256,000USD —USD —SEC filing ↗
2026-10-06Wichterman TroyAward / grant (A)Common Stock138,504USD —USD —SEC filing ↗
2026-10-06Werner SeanTax withholding (F)Common Stock71,226USD 38.61USD 2,750,036SEC filing ↗
2026-10-06Werner SeanD (D)Common Stock69,979USD —USD —SEC filing ↗
2026-10-06Werner SeanAward / grant (A)Common Stock94,070USD —USD —SEC filing ↗
2026-10-06Mathew Aby J.Tax withholding (F)Common Stock70,000USD 38.61USD 2,702,700SEC filing ↗
2026-10-06Mathew Aby J.D (D)Common Stock404,608USD —USD —SEC filing ↗
2026-10-06Mathew Aby J.Award / grant (A)Common Stock86,030USD —USD —SEC filing ↗
2026-10-06MOORE TIMOTHY L.D (D)Common Stock44,943USD —USD —SEC filing ↗
2026-10-06Hunt AnthonyD (D)Common Stock15,046USD —USD —SEC filing ↗
2026-10-06GOSWAMI JOYDEEPD (D)Common Stock53,156USD —USD —SEC filing ↗
2026-10-06Ellingson RachelD (D)Common Stock57,995USD —USD —SEC filing ↗
2026-10-06DuRoss AmyD (D)Common Stock26,857USD —USD —SEC filing ↗
2026-10-06DE GREEF RODERICKTax withholding (F)Common Stock364,872USD 38.61USD 14,087,708SEC filing ↗
2026-10-06DE GREEF RODERICKD (D)Common Stock826,454USD —USD —SEC filing ↗
2026-10-06DE GREEF RODERICKAward / grant (A)Common Stock463,130USD —USD —SEC filing ↗
2026-10-06Coste CatherineD (D)Common Stock13,871USD —USD —SEC filing ↗
2026-10-06Berard ToddTax withholding (F)Common Stock46,170USD 38.61USD 1,782,624SEC filing ↗
2026-10-06Berard ToddD (D)Common Stock194,786USD —USD —SEC filing ↗
2026-10-06Berard ToddAward / grant (A)Common Stock78,390USD —USD —SEC filing ↗
2026-09-18Wichterman TroyTax withholding (F)Common Stock937USD 36.69USD 34,379SEC filing ↗
2026-09-18Werner SeanTax withholding (F)Common Stock421USD 36.69USD 15,446SEC filing ↗
2026-09-18Mathew Aby J.Tax withholding (F)Common Stock564USD 36.69USD 20,693SEC filing ↗
2026-09-18DE GREEF RODERICKTax withholding (F)Common Stock2,775USD 36.69USD 101,815SEC filing ↗
2026-09-18Berard ToddTax withholding (F)Common Stock470USD 36.69USD 17,244SEC filing ↗
2026-09-08Wichterman TroyTax withholding (F)Common Stock1,026USD 35.38USD 36,300SEC filing ↗
2026-09-08Mathew Aby J.Tax withholding (F)Common Stock627USD 35.38USD 22,183SEC filing ↗
2026-09-08Berard ToddTax withholding (F)Common Stock356USD 35.38USD 12,595SEC filing ↗
2026-07-17Werner SeanTax withholding (F)Common Stock275USD 29.15USD 8,016SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerBLFS
CIK0000834365
SectorHealthcare
Industry— Yahoo Finance
SEC SIC3845 Electromedical & Electrotherapeutic Apparatus
ExchangeNasdaq

Data coverage

Local Form 4 history1,276 transaction lines from 2020-01-06 to 2026-10-06
12 P purchase lines · 773 S sale lines · 491 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.