Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

← United States · Coverage record

US · SEC FORM 4

REGENERON PHARMACEUTICALS, INC.

REGN · Nasdaq · CIK 0000872589 · Healthcare · Biotechnology

INSIDER SIGNAL

No active buy signal

0 qualifying P purchase groups
in the current 180-day scoring window

54 Form 4 transaction lines observed in the same window
45 sales · 9 option, withholding, award, gift or other lines

Last qualifying purchaseNo qualifying purchase is present in the local Form 4 history.

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesHigh
Buy signal statusInactive
Score anatomy

No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.

ClusterNot calculated
Purchase sizeNot calculated
RoleNot calculated
RecencyNot calculated
ConvictionNot calculated

Why is there no score?

  • No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
  • Sales and other Form 4 activity remain visible as context and do not create a negative score.

Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
Guarini KathrynDirector
○▼○▼
MURPHY ANDREW JCo-Chief Scientific Officer
○○▼
McCourt MarionEVP Commercial
▼▼
RYAN ARTHUR FDirector
▼▼
LAROSA JOSEPH JEVP General Counsel and Secret
○○
Fenimore Christopher R.EVP Finance CFO
○○
● Purchase▼ Sale○ Other

Showing the six most active owners; 1 additional owner(s) remain in Form 4 evidence.

Purchase breadth, concentration & cluster buying

These modules activate when qualifying purchases enter the 180-day research window.

SIGNAL HISTORY

No recorded active-signal snapshot

Scores are archived only when the company qualifies for a published US buy-signal snapshot.—

Recent Form 4 activity

0Purchases
111Sales
56Other Form 4 lines
45SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING45 sale line(s) · context only
OTHER9 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
2,150,303
Previous report
2,526,446
Avg daily volume
863,842
Days to cover
2.5

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

No qualifying code P equity purchase is present in the local Form 4 history.

Form 4 evidence

167 transaction lines in the latest 365-day window; 2,939 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-14MURPHY ANDREW JSale (S)Common Stock4,147USD 772.70USD 3,204,376SEC filing ↗
2026-10-13MURPHY ANDREW JOption exercise / conversion (M)Common Stock17,000USD 381.92USD 6,492,640SEC filing ↗
2026-10-13MURPHY ANDREW JTax withholding (F)Common Stock12,853USD 754.58USD 9,698,617SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-14MURPHY ANDREW JSale (S)Common Stock4,147USD 772.70USD 3,204,376SEC filing ↗
2026-10-13MURPHY ANDREW JOption exercise / conversion (M)Common Stock17,000USD 381.92USD 6,492,640SEC filing ↗
2026-10-13MURPHY ANDREW JTax withholding (F)Common Stock12,853USD 754.58USD 9,698,617SEC filing ↗
2026-09-03McCourt MarionSale (S)Common Stock1,131USD 857.39USD 969,708SEC filing ↗
2026-09-02McCourt MarionSale (S)Common Stock1,215USD 850.00USD 1,032,750SEC filing ↗
2026-09-02Guarini KathrynSale (S)Common Stock400USD 850.00USD 340,000SEC filing ↗
2026-09-02Guarini KathrynOption exercise / conversion (M)Common Stock400USD 719.37USD 287,748SEC filing ↗
2026-08-19LAROSA JOSEPH JOption exercise / conversion (M)Common Stock12,282USD 381.92USD 4,690,741SEC filing ↗
2026-08-19LAROSA JOSEPH JTax withholding (F)Common Stock9,019USD 830.15USD 7,487,123SEC filing ↗
2026-08-18Fenimore Christopher R.Option exercise / conversion (M)Common Stock6,283USD 381.92USD 2,399,603SEC filing ↗
2026-08-18Fenimore Christopher R.Tax withholding (F)Common Stock4,599USD 813.47USD 3,741,149SEC filing ↗
2026-08-10Zoghbi Huda YSale (S)Common Stock800USD 800.00USD 640,000SEC filing ↗
2026-08-10Zoghbi Huda YOption exercise / conversion (M)Common Stock800USD 376.69USD 301,352SEC filing ↗
2026-08-10Guarini KathrynSale (S)Common Stock400USD 800.00USD 320,000SEC filing ↗
2026-08-10Guarini KathrynOption exercise / conversion (M)Common Stock400USD 719.37USD 287,748SEC filing ↗
2026-07-02RYAN ARTHUR FSale (S)Common Stock200USD 650.15USD 130,030SEC filing ↗
2026-05-01RYAN ARTHUR FSale (S)Common Stock100USD 705.24USD 70,524SEC filing ↗
2026-04-01RYAN ARTHUR FSale (S)Common Stock100USD 777.27USD 77,727SEC filing ↗
2026-03-02RYAN ARTHUR FSale (S)Common Stock100USD 785.50USD 78,550SEC filing ↗
2026-02-19Zoghbi Huda YSale (S)Common Stock1,638USD 781.33USD 1,279,812SEC filing ↗
2026-02-19Zoghbi Huda YOption exercise / conversion (M)Common Stock1,638USD 376.69USD 617,018SEC filing ↗
2026-02-09RYAN ARTHUR FSale (S)Common Stock100USD 778.53USD 77,853SEC filing ↗
2026-02-09Pitofsky JasonSale (S)Common Stock2,036USD 778.52USD 1,585,058SEC filing ↗
2026-02-09Pitofsky JasonOption exercise / conversion (M)Common Stock1,000USD 492.00USD 492,000SEC filing ↗
2026-01-07Bassler Bonnie LSale (S)Common Stock1,500USD 800.00USD 1,200,000SEC filing ↗
2026-01-07Bassler Bonnie LOption exercise / conversion (M)Common Stock1,500USD 374.12USD 561,180SEC filing ↗
2026-01-02Zoghbi Huda YAward / grant (A)Common Stock155USD 0.00USD 0SEC filing ↗
2026-01-02Thompson Craig B.Award / grant (A)Common Stock155USD 0.00USD 0SEC filing ↗
2026-01-02Schenkein David PAward / grant (A)Common Stock155USD 0.00USD 0SEC filing ↗
2026-01-02SING GEORGE LAward / grant (A)Common Stock155USD 0.00USD 0SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerREGN
CIK0000872589
SectorHealthcare
IndustryBiotechnology Yahoo Finance
SEC SIC2834 Pharmaceutical Preparations
ExchangeNasdaq

Data coverage

Local Form 4 history2,939 transaction lines from 2020-01-02 to 2026-10-14
0 P purchase lines · 2,208 S sale lines · 731 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.