Company insider activity
BLFS — insider activity
BLFS — 31 tracked Form 4 transactions across 11 distinct insiders. Scored on HoldLens's signed −100..+100 InsiderScore.
HoldLens InsiderScore
+42
Net insider buying
Buys
10
$0
Sells
21
$25.22M
Cluster
Yes
3+ officers · 30d
Confidence
100%
sample × size
All tracked transactions
| Insider | Action | Value |
|---|---|---|
| Wichterman Troy | SELL | $0 |
| Wichterman Troy | SELL | $3.70M |
| Wichterman Troy | BUY | $0 |
| Wichterman Troy | BUY | $0 |
| GOSWAMI JOYDEEP | SELL | $0 |
| Ellingson Rachel | SELL | $0 |
| DuRoss Amy | SELL | $0 |
| Coste Catherine | SELL | $0 |
| DE GREEF RODERICK | SELL | $0 |
| DE GREEF RODERICK | SELL | $14.09M |
| DE GREEF RODERICK | BUY | $0 |
| DE GREEF RODERICK | BUY | $0 |
| Hunt Anthony | SELL | $0 |
| MOORE TIMOTHY L. | SELL | $0 |
| Mathew Aby J. | SELL | $0 |
| Mathew Aby J. | SELL | $2.70M |
| Mathew Aby J. | BUY | $0 |
| Mathew Aby J. | BUY | $0 |
| Berard Todd | SELL | $0 |
| Berard Todd | SELL | $1.78M |
| Berard Todd | BUY | $0 |
| Berard Todd | BUY | $0 |
| Werner Sean | SELL | $0 |
| Werner Sean | SELL | $2.75M |
| Werner Sean | BUY | $0 |
| Werner Sean | BUY | $0 |
| Berard Todd | SELL | $17K |
| Mathew Aby J. | SELL | $21K |
| Werner Sean | SELL | $15K |
| DE GREEF RODERICK | SELL | $102K |
| Wichterman Troy | SELL | $34K |
Related
BLFS ConvictionScore
Full 13F + InsiderScore unified signal for BLFS.
Live insider feed
Every tracked Form 4 across all companies, chronological.
Insider methodology
How InsiderScore is computed — role, action, recency, cluster bonus.
Deep dive
Reading for your research
Optional background reading on interpreting company disclosures and investing methods. These books do not validate a signal or predict returns.
Amazon affiliate links — as an Amazon Associate, HoldLens earns from qualifying purchases and membership trials at no extra cost to you. These are books we genuinely recommend. Not investment advice; always do your own research.
Benjamin Graham
The Intelligent Investor
The foundational text. Buffett calls it 'by far the best book about investing ever written.'
See price on Amazon
Benjamin Graham & David Dodd
Security Analysis
The deep dive behind The Intelligent Investor — how to actually read a filing and value a business.
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See the full investing reading list
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