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

Avantor, Inc.

AVTR · NYSE · CIK 0001722482 · Healthcare · Medical Instruments & Supplies

INSIDER SIGNAL

56.8 / 100

2 buyers · 2 purchase transaction lines · $286.7K gross purchase

WHY THIS SIGNAL?

Buyer breadthLow
Purchase sizeModerate
RoleStrong
RecencyLow
ConvictionStrong
Score anatomy

Each bar shows the contribution to the current score; the weights and formula stay unchanged.

Cluster+14.0 / 35
Purchase size+12.1 / 25
Role+20.0 / 20
Recency+0.7 / 10
Conviction+10.0 / 10

What is holding the score back?

  • ⚠ Cluster breadth is moderate · 2 insider(s), not 4+
  • ⚠ Purchase size is modest relative to the model scale
  • ⚠ Purchase activity is becoming less recent
  • ✓ Role scores high · most senior buyer: Director

Purchase-size comments are relative to the model scale. Average daily volume is a separate market-context diagnostic.

US-v1.2 ranks qualifying equity purchases under the current 180-day rules. The score is a research priority, not a return forecast or probability. Backtests have not shown that a higher US score is followed by better returns.

Insider activity timeline

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

AprMayJunJulAugSepOct
LUCIER GREGORY TDirector
○●
Dingemans SimonDirector
●○
Walker CoreyPresident, VWR Dist. & Servs.
○
Murthy MalaDirector
○
Makin LouiseDirector
○
Massaro Joseph RDirector
○
● Purchase▼ Sale○ Other

Showing the six most active owners; 9 additional owner(s) remain in Form 4 evidence.

Purchase breadth & concentration

QUALIFYING BUYERS2
PURCHASE CONCENTRATION71%Largest buyer: Dingemans Simon · $203.5K
CLUSTER BUYING · 15D2 insidersPeak activity: 2026-05-01–2026-05-08

Roles in the peak window: Director. Concentration uses priced qualifying P lines only and does not change the saved score.

SIGNAL HISTORY

56.8 / 100

Latest recorded score

→ +0.0 ptsversus the previous recorded snapshot
  1. 57.0
  2. 57.0
  3. 56.9
  4. 56.8
  5. 56.8

Only scores saved when a full US scoring run completed are shown; gaps are not reconstructed.

Recent Form 4 activity

8Purchases
0Sales
40Other Form 4 lines
38SEC filings · 365 days
BUYING2 qualifying P line(s) · 180 days
SELLING0 sale line(s) · context only
OTHER15 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 provides additional background on recent price performance and risk. It does not affect the Insider Signal.

Price performance

1M
+5.3%
3M
+48.4%
6M
+98.4%
12M
+14.0%

Volatility & liquidity

Volatility
49.0%
Beta
—
Avg daily value
USD 148.7M

Valuation

Market cap
USD 10.6B
P/E
—

Fundamentals

Profit margin
-8.1%
ROE
-9.5%
Industry
Medical Instruments & Supplies

Market data

Price data up to: 2026-10-11 · Price source: OpenBB/yfinance; volume from price cache (yfinance) · From SEC filings: Market cap, Profit margin, ROE · Fiscal year ended: 2025-12-31 · Market cap is the shares outstanding stated on the filing cover multiplied by the latest close. Share count date: 2026-07-24 · Status: PASS

Short interest

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

Shares short
39,348,974
Previous report
51,373,338
Avg daily volume
9,465,117
Days to cover
4.2

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
2026-05-08LUCIER GREGORY TPurchase (P)Common Stock10,000USD 8.32USD 83,200SEC filing ↗
2026-05-01Dingemans SimonPurchase (P)Common Stock25,000USD 8.14USD 203,500SEC filing ↗
2026-03-10MEHRA SANJEEV KPurchase (P)Common Stock125,000USD 8.01USD 1,001,250SEC filing ↗
2026-02-19LUCIER GREGORY TPurchase (P)Common Stock50,000USD 9.16USD 458,000SEC filing ↗
2026-02-12SUMME GREGORY LPurchase (P)Common Stock100,000USD 9.40USD 940,000SEC filing ↗
2025-12-05MEHRA SANJEEV KPurchase (P)Common Stock350,000USD 11.09USD 3,881,500SEC filing ↗
2025-11-17Ligner EmmanuelPurchase (P)Common Stock87,500USD 11.35USD 993,125SEC filing ↗
2025-10-30SUMME GREGORY LPurchase (P)Common Stock100,000USD 11.25USD 1,125,000SEC filing ↗
2025-08-21SUMME GREGORY LPurchase (P)Common Stock100,000USD 12.56USD 1,256,000SEC filing ↗
2025-05-23SUMME GREGORY LPurchase (P)Common Stock30,000USD 12.50USD 375,000SEC filing ↗
2025-05-22SUMME GREGORY LPurchase (P)Common Stock20,000USD 12.65USD 253,000SEC filing ↗
2025-05-07SUMME GREGORY LPurchase (P)Common Stock25,000USD 12.00USD 300,000SEC filing ↗
2025-04-29Massaro Joseph RPurchase (P)Common Stock8,100USD 12.30USD 99,630SEC filing ↗
2025-04-28SUMME GREGORY LPurchase (P)Common Stock25,000USD 12.50USD 312,500SEC filing ↗
2025-04-28Peacock Jonathan MPurchase (P)Common Stock8,091USD 12.81USD 103,646SEC filing ↗

Form 4 evidence

48 transaction lines in the latest 365-day window; 610 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-21Garner Todd WAward / grant (A)Common Stock49,688USD 0.00USD 0SEC filing ↗
2026-08-18Ligner EmmanuelTax withholding (F)Common Stock29,803USD 13.33USD 397,274SEC filing ↗
2026-08-14Hankamer BrittanyTax withholding (F)Common Stock181USD 13.66USD 2,472SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-21Garner Todd WAward / grant (A)Common Stock49,688USD 0.00USD 0SEC filing ↗
2026-08-18Ligner EmmanuelTax withholding (F)Common Stock29,803USD 13.33USD 397,274SEC filing ↗
2026-08-14Hankamer BrittanyTax withholding (F)Common Stock181USD 13.66USD 2,472SEC filing ↗
2026-07-31Eck Steven WTax withholding (F)Common Stock1,385USD 13.78USD 19,085SEC filing ↗
2026-07-24Sokenu ClaudiusTax withholding (F)Common Stock1,201USD 11.44USD 13,739SEC filing ↗
2026-06-21Walker CoreyTax withholding (F)Common Stock3,010USD 9.58USD 28,836SEC filing ↗
2026-05-08LUCIER GREGORY TPurchase (P)Common Stock10,000USD 8.32USD 83,200SEC filing ↗
2026-05-07SUMME GREGORY LAward / grant (A)Common Stock25,270USD 0.00USD 0SEC filing ↗
2026-05-07SEVERINO MICHAELAward / grant (A)Common Stock25,270USD 0.00USD 0SEC filing ↗
2026-05-07Murthy MalaAward / grant (A)Common Stock25,270USD 0.00USD 0SEC filing ↗
2026-05-07Massaro Joseph RAward / grant (A)Common Stock25,270USD 0.00USD 0SEC filing ↗
2026-05-07Makin LouiseAward / grant (A)Common Stock25,270USD 0.00USD 0SEC filing ↗
2026-05-07MEHRA SANJEEV KAward / grant (A)Common Stock25,270USD 0.00USD 0SEC filing ↗
2026-05-07LUCIER GREGORY TAward / grant (A)Common Stock25,270USD 0.00USD 0SEC filing ↗
2026-05-07Dingemans SimonAward / grant (A)Common Stock25,270USD 0.00USD 0SEC filing ↗
2026-05-01Dingemans SimonPurchase (P)Common Stock25,000USD 8.14USD 203,500SEC filing ↗
2026-05-01Brellier LudovicAward / grant (A)Common Stock146,566USD 0.00USD 0SEC filing ↗
2026-04-03Eck Steven WAward / grant (A)Common Stock31,645USD 0.00USD 0SEC filing ↗
2026-03-10MEHRA SANJEEV KPurchase (P)Common Stock125,000USD 8.01USD 1,001,250SEC filing ↗
2026-02-24Hankamer BrittanyTax withholding (F)Common Stock359USD 9.11USD 3,270SEC filing ↗
2026-02-24Eck Steven WTax withholding (F)Common Stock452USD 9.11USD 4,118SEC filing ↗
2026-02-23Sokenu ClaudiusTax withholding (F)Common Stock2,376USD 8.89USD 21,123SEC filing ↗
2026-02-23Jones R. BrentTax withholding (F)Common Stock2,805USD 8.89USD 24,936SEC filing ↗
2026-02-23Hankamer BrittanyTax withholding (F)Common Stock1,324USD 8.89USD 11,770SEC filing ↗
2026-02-23Gourdier BenoitTax withholding (F)Common Stock3,029USD 8.89USD 26,928SEC filing ↗
2026-02-23Eck Steven WTax withholding (F)Common Stock2,017USD 8.89USD 17,931SEC filing ↗
2026-02-20Walker CoreyTax withholding (F)Common Stock4,963USD 9.03USD 44,816SEC filing ↗
2026-02-20Sokenu ClaudiusTax withholding (F)Common Stock2,919USD 9.03USD 26,359SEC filing ↗
2026-02-20Jones R. BrentTax withholding (F)Common Stock9,506USD 9.03USD 85,839SEC filing ↗
2026-02-20Hankamer BrittanyTax withholding (F)Common Stock1,453USD 9.03USD 13,121SEC 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 · —
TickerAVTR
CIK0001722482
SectorHealthcare
IndustryMedical Instruments & Supplies Yahoo Finance
SEC SIC3826 Laboratory Analytical Instruments
ExchangeNYSE

Data coverage

Local Form 4 history610 transaction lines from 2020-01-02 to 2026-09-21
53 P purchase lines · 130 S sale lines · 427 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.