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

REPLIGEN CORP

RGEN · Nasdaq · CIK 0000730272 · Healthcare · Medical Instruments & Supplies

INSIDER SIGNAL

No active buy signal

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

30 Form 4 transaction lines observed in the same window
10 sales · 20 option, withholding, award, gift or other lines

Last qualifying purchase2025-08-08 · Madaus Martin D · $201.8K

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesModerate
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
Loeillot OlivierChief Executive Officer
▼○▼○▼○▼○▼○○▼
Garland Jason KCFO
▼▼○
MUIR GLENN PDirector
○○
Douglass Brian RobbCHIEF PRODUCT OFFICER
○○
Konstantinov KonstantinDirector
○
Madaus Martin DDirector
○
● Purchase▼ Sale○ Other

Showing the six most active owners; 6 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. Last qualifying purchase: 2025-08-08 · Madaus Martin D.

Recent Form 4 activity

0Purchases
25Sales
44Other Form 4 lines
42SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING10 sale line(s) · context only
OTHER20 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
7,581,634
Previous report
6,712,693
Avg daily volume
1,146,770
Days to cover
6.6

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

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2025-08-08Madaus Martin DPurchase (P)Common Stock1,800USD 112.13USD 201,834SEC filing ↗
2025-03-17Pax MargaretPurchase (P)Common Stock250USD 150.69USD 37,672SEC filing ↗
2024-06-14Madaus Martin DPurchase (P)Common Stock1,615USD 124.94USD 201,776SEC filing ↗
2024-06-14Hunt AnthonyPurchase (P)Common Stock2,000USD 124.08USD 248,160SEC filing ↗
2024-06-14BARTHELEMY NICOLASPurchase (P)Common Stock1,200USD 125.45USD 150,540SEC filing ↗
2023-05-08Madaus Martin DPurchase (P)Common Stock500USD 156.18USD 78,090SEC filing ↗
2023-05-05Madaus Martin DPurchase (P)Common Stock500USD 159.19USD 79,595SEC filing ↗
2023-05-04Madaus Martin DPurchase (P)Common Stock500USD 161.15USD 80,575SEC filing ↗
2022-03-16EGLINTON MANNER CARRIEPurchase (P)Common Stock625USD 175.02USD 109,388SEC filing ↗

Form 4 evidence

69 transaction lines in the latest 365-day window; 615 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-06Douglass Brian RobbAward / grant (A)Common Stock700USD 0.00USD 0SEC filing ↗
2026-10-05Loeillot OlivierSale (S)Common Stock5,535USD 187.29USD 1,036,654SEC filing ↗
2026-10-05Loeillot OlivierOption exercise / conversion (M)Common Stock4,202USD 154.96USD 651,142SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-06Douglass Brian RobbAward / grant (A)Common Stock700USD 0.00USD 0SEC filing ↗
2026-10-05Loeillot OlivierSale (S)Common Stock5,535USD 187.29USD 1,036,654SEC filing ↗
2026-10-05Loeillot OlivierOption exercise / conversion (M)Common Stock4,202USD 154.96USD 651,142SEC filing ↗
2026-10-02Loeillot OlivierTax withholding (F)Common Stock1,248USD 181.70USD 226,762SEC filing ↗
2026-09-25Garland Jason KTax withholding (F)Common Stock421USD 189.68USD 79,855SEC filing ↗
2026-09-24Loeillot OlivierSale (S)Common Stock12,946USD 190.00USD 2,459,740SEC filing ↗
2026-09-24Loeillot OlivierOption exercise / conversion (M)Common Stock12,946USD 155.11USD 2,008,020SEC filing ↗
2026-09-21Loeillot OlivierSale (S)Common Stock5,426USD 180.00USD 976,680SEC filing ↗
2026-09-21Loeillot OlivierOption exercise / conversion (M)Common Stock5,426USD 141.79USD 769,353SEC filing ↗
2026-09-04Loeillot OlivierSale (S)Common Stock3,035USD 165.90USD 503,506SEC filing ↗
2026-09-03Loeillot OlivierTax withholding (F)Common Stock2,842USD 169.61USD 482,032SEC filing ↗
2026-09-01Hughes ViolettaTax withholding (F)Common Stock277USD 170.02USD 47,096SEC filing ↗
2026-08-20Loeillot OlivierSale (S)Common Stock5,426USD 180.00USD 976,680SEC filing ↗
2026-08-20Loeillot OlivierOption exercise / conversion (M)Common Stock5,426USD 141.79USD 769,353SEC filing ↗
2026-07-16Garland Jason KSale (S)Common Stock530USD 150.00USD 79,500SEC filing ↗
2026-06-25Garland Jason KSale (S)Common Stock733USD 145.00USD 106,285SEC filing ↗
2026-05-14Pax MargaretAward / grant (A)Common Stock995USD 0.00USD 0SEC filing ↗
2026-05-14Mhatre RohinAward / grant (A)Common Stock995USD 0.00USD 0SEC filing ↗
2026-05-14Madaus Martin DAward / grant (A)Common Stock995USD 0.00USD 0SEC filing ↗
2026-05-14MUIR GLENN PAward / grant (A)Common Stock995USD 0.00USD 0SEC filing ↗
2026-05-14Konstantinov KonstantinAward / grant (A)Common Stock995USD 0.00USD 0SEC filing ↗
2026-05-14EGLINTON MANNER CARRIEAward / grant (A)Common Stock995USD 0.00USD 0SEC filing ↗
2026-05-14DAWES KAREN AAward / grant (A)Common Stock995USD 0.00USD 0SEC filing ↗
2026-05-14BARTHELEMY NICOLASAward / grant (A)Common Stock995USD 0.00USD 0SEC filing ↗
2026-05-07MUIR GLENN POption exercise / conversion (M)Common Stock2,434USD 38.76USD 94,342SEC filing ↗
2026-05-07Douglass Brian RobbTax withholding (F)Common Stock334USD 126.43USD 42,228SEC filing ↗
2026-04-21Loeillot OlivierSale (S)Common Stock3,832USD 140.00USD 536,480SEC filing ↗
2026-03-05Hughes ViolettaAward / grant (A)Common Stock2,466USD 0.00USD 0SEC filing ↗
2026-03-05Loeillot OlivierAward / grant (A)Common Stock24,134USD 0.00USD 0SEC filing ↗
2026-03-05KURIYEL RALFAward / grant (A)Common Stock5,284USD 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 · —
TickerRGEN
CIK0000730272
SectorHealthcare
IndustryMedical Instruments & Supplies Yahoo Finance
SEC SIC2836 Biological Products, (No Diagnostic Substances)
ExchangeNasdaq

Data coverage

Local Form 4 history615 transaction lines from 2020-02-21 to 2026-10-06
10 P purchase lines · 305 S sale lines · 300 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.