Summary
Updated Aug 31, 2026
VIKING GLOBAL INVESTORS LP files SEC Form 4 reports at Inhibrx Biosciences, Inc. (INBX). 2 SEC Form 4 filings on record, most recently on 7 October 2025. Most recent open-market trade: sold $808K of INBX on 7 October 2025. Lifetime open-market sales: $165.29M.
Recent Transactions
4Every recent SEC Form 4 transaction VIKING GLOBAL INVESTORS LP has reported, most recent first.
Trading Pattern
InsiderAlpha's records for VIKING GLOBAL INVESTORS LP go back to 2025: 2 primary Form 4 filings, an average of 1.0 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies VIKING GLOBAL INVESTORS LP files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Neil Kumar - $53.07M of BBIO open-market activity in the last 12 months
- Jennifer E. Cook - $21.92M of BBIO open-market activity in the last 12 months
- Frank McCormick - $17.25M of BBIO open-market activity in the last 12 months
- Andrew Lo - $6.32M of BBIO open-market activity in the last 12 months
- Andrea Ellis - $5.65M of BBIO open-market activity in the last 12 months
- Hannah Valantine - $4.37M of BBIO open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
What is VIKING GLOBAL INVESTORS LP?
VIKING GLOBAL INVESTORS LP is an investment firm of Inhibrx Biosciences, Inc. (INBX). InsiderAlpha holds 2 primary Form 4 filings for it, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did VIKING GLOBAL INVESTORS LP last file a Form 4?
The most recent primary Form 4 on record is dated 7 October 2025, one of 2 filings going back to 2025.
Has VIKING GLOBAL INVESTORS LP been buying or selling stock?
Recorded transactions: 0 open-market purchases and 4 open-market sales ($165.29M) across all tracked filings.
Where can I see all of VIKING GLOBAL INVESTORS LP's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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