// company-profile
Regeneron Pharmaceuticals, Inc.
REGNExchangeNasdaqSectorPharmaceutical PreparationsInc.NYFilings201Insiders22
// api This Regeneron Pharmaceuticals, Inc. insider-trading data is served live by the Form4API insider trading API. Get the same data via API.
// activity-summary
No insider transactions in the last 30 days.
// 90-day insight
Over the last 90 days, Regeneron Pharmaceuticals, Inc. insiders filed 21 Form 4 transactions, none of which were open-market purchases or sales.
- Most active insider: RYAN ARTHUR F with 21 transactions totaling $148K.
- Largest single sale: $31K by RYAN ARTHUR F on Apr 1, 2026.
- 100% of recent sales were pre-scheduled 10b5-1 trades — typically less informative than open-market activity.
Activity skews bullish — buys outpace sales.
Institutional Ownership
Top 13F-HR holders of Regeneron Pharmaceuticals, Inc. as of 2026-03-31
Total reported AUM
$61.14B
QoQ change
-0.9%
Reporting period
2026-03-31
#1
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
$5.14B
6.7M shares
#2
STATE STREET CORP
CIK 93751
$3.60B
4.7M shares
#3
Dodge & Cox
CIK 200217
$3.44B
4.5M shares
Data source: SEC Form 13F-HR filings. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| May 1, 2026 | RYAN ARTHUR F | REGN | Sale10b5 | 15 | $704.28 | $11K |
| May 1, 2026 | RYAN ARTHUR F | REGN | Sale10b5 | 24 | $703.46 | $17K |
| May 1, 2026 | RYAN ARTHUR F | REGN | Sale10b5 | 5 | $711.49 | $4K |
| May 1, 2026 | RYAN ARTHUR F | REGN | Sale10b5 | 5 | $701.76 | $4K |
| May 1, 2026 | RYAN ARTHUR F | REGN | Sale10b5 | 15 | $702.46 | $11K |
45 more transactions hidden
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