Corporate insider
Mosberg Ron
CSTEHoldLens InsiderScore
-10
Slight insider selling
Buys
0
$0
Sells
1
$180.48
Dominant
sell
Confidence
7%
Transaction history
| Date | Action | Shares | Price | Value |
|---|---|---|---|---|
| Sep 24, 2026 | SELL | 64 | $2.82 | $180.48 |
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Every tracked officer at CSTE — aggregate InsiderScore + all Form 4s.
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Full 13F + InsiderScore unified signal for CSTE.
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Every tracked Form 4 across all companies, chronological.
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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.'
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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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