What this is
Single filing record
This page shows the rows from one Form 4 filing as reported to the SEC.
Cluster buy
LBRX Insider Cluster Buy, September 2025
8 insiders at LB PHARMACEUTICALS INC bought a combined $65M between Sep 12, 2025 and Sep 17, 2025. Learn more
Feed status Last SEC check:Loading Last Filing: Loading
View LBRX
Access Free feed
Quick read What does this view show?
Why it matters
Read the SEC filing
The original SEC document is the source record. Always verify before drawing conclusions.
How to read it
Role, size, timing
Insider activity carries more weight from senior officers, large dollar values, and clustered timing.
Stacked feeds
Key insider views at a glance
Cluster BuyLBRX
8 insiders at LB PHARMACEUTICALS INC
LBRX Insider Cluster Buy, September 2025 · $65M
Cluster of 8 insiders bought a combined $65M of LBRX between Sep 12, 2025 and Sep 17, 2025.
Cluster details
Cluster details
8 insiders at LB PHARMACEUTICALS INC, Healthcare ($818.1M market cap) bought a combined $65,046,015 in 5 days, 8.0% of the market cap.
Largest member: Deep Track Biotechnology Master Fund, Ltd (10% Owner) at $30M.
Permalink https://bluecollarpicks.com/insider-trading/LBRX/cluster/2025-09-12-8-insiders-lb-pharmaceuticals
Timeline
When each insider bought
Sep 12, 2025 – Sep 17, 2025
- Sep 12, 2025Pontifax Management 4 G.P. (2015) Ltd10% Owner$15M
- Sep 12, 2025Deep Track Biotechnology Master Fund, Ltd10% Owner$30M
- Sep 12, 2025Vida Ventures Gp III, LLC10% Owner$11.5K
- Sep 12, 2025Vida Ventures III-A, LP10% Owner$11.5K
- Sep 12, 2025Vida Ventures III, LP10% Owner$11.5K
- Sep 12, 2025Vida Ventures Management Co LLC10% Owner$11.5K
- Sep 12, 2025Arie Belldegrun10% Owner$11.5K
- Sep 12, 2025Vida Ventures Gp III, LLC10% Owner$5M
- Sep 12, 2025Ran NussbaumDirector$15M
Market context
LBRX market snapshot
Current price$28.53
1-day change-1.28%
Market cap$818.1M
SectorHealthcare
$28.53
Current price$28.53
Analyst target$45.00 (+57.7%)
Last enriched June 7, 2026 at 5:10 AM EDT.
Filings
Transactions in This Cluster
Status Loading
Latest visible filing loading.
Public Form 4 filings, normalized for cleaner scanning. What do these codes mean?
| Ticker | Type & Role | Value | |
|---|---|---|---|
Cluster Buy 10% Owner | $15M | ||
Cluster Buy 10% Owner | $30M | ||
Cluster Buy 10% Owner | $11.5K | ||
Cluster Buy 10% Owner | $11.5K | ||
Cluster Buy 10% Owner | $11.5K | ||
Cluster Buy 10% Owner | $11.5K | ||
Cluster Buy 10% Owner | $11.5K | ||
Cluster Buy 10% Owner | $5M | ||
Cluster Buy Director | $15M | ||
Cluster detail
Cluster members
Ticker context
Ticker summary
Recent insider activity for this company.
Insider detail
Insider activity
Recent transactions grouped by reporting owner.
Filters
Filters
Context
Why This Cluster May Matter
Cluster buying occurs when multiple insiders purchase shares within a short window, often before a material company announcement. This cluster involved 8 insiders over 5 days, totaling $65,046,015 across 9 filings.
Insiders are required to report purchases within two business days via SEC Form 4. Every transaction on this page links back to the original filing on EDGAR. Learn more about cluster buying.
Stay informed
Get alerts when insiders cluster buy
One digest per week. No spam.
Weekly recap
Get the easier version in your inbox.
Start with the free weekly recap. Upgrade later if you want the paid daily brief.
Free weekly recap. No login required. Unsubscribe any time.
Method Public Form 4 filings, normalized for cleaner scanning. Filtered rows stay available in All Form 4 Filings and ticker history. Which view should I use? →
Paid research tools
CSV exports are becoming a paid feature.
Join the waitlist for founding-member access to CSV exports, saved screens, and premium download tools when they open.