InsidersTradesSigma
Total declarations
Companies
▲ Purchases (1 ops.)
▼ Sales (1 ops.)
Insider track record
CEODisclosed buys
1
Disclosed sells
1
Not enough buy signals with a settled T+90 horizon to measure a track record yet.
Signal history
Explore the full record of transactions filed by Stubblefield Michael, Chairman & CEO. Director active across 2 companies, notably Avantor, Inc.. Cumulatively, 21 disclosures have been recorded. Breakdown: 1 buy · 1 sell. Total volume traded: €5.4m. Activity tracked since 17 May 2021. The latest transaction was filed on 21 May 2025 (Don). Regulator: SEC (Form 4). The full history is openly available.
Companies and markets linked to Stubblefield Michael
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
Declarations21 total
76,000 shares0Common StockSEC:0001722482-25-000161:0
6,800 shares@ US$17.470.5% of flowCommon StockSEC:0001722482-25-000049:0
157,232 shares0Common StockSEC:0001722482-25-000035:0
107,802 shares0Common StockSEC:0001722482-24-000068:0
99,075 shares0Common StockSEC:0001722482-24-000043:0
9,711 shares@ US$24.050.9% of flowCommon StockSEC:0001722482-24-000023:0
1,857 sharesCommon StockSEC:0001140361-23-038641:0
40,000 shares0Common StockSEC:0001722482-23-000140:0
40,000 shares0Common StockSEC:0001722482-23-000140:1
106,200 shares@ US$20.288.6% of flowCommon StockSEC:0001722482-23-000135:0
7,422 shares@ US$24.590.7% of flowCommon StockSEC:0001722482-23-000066:0
15,026 shares@ US$24.541.5% of flowCommon StockSEC:0001722482-23-000057:0
223,482 shares0Common StockSEC:0001722482-23-000024:0
15,000 shares@ US$20.951.3% of flowCommon StockSEC:0001722482-22-000189:0
Canonical exit: 14 Feb 2023 (T+90)
108,700 shares@ US$31.330.041% mcap16.2% of flowCommon StockSEC:0001722482-22-000140:0
14,500 shares0Common StockSEC:0001722482-22-000116:0
69,885 shares0Common StockSEC:0001722482-22-000049:0
10,959 shares@ US$34.000.0042% mcap1.6% of flowCommon StockSEC:0001722482-22-000043:0
141,300 shares@ US$42.3734.3% of flowCommon StockSEC:0001722482-21-000228:0
152,643 shares@ US$3.132.6% of flowCommon StockSEC:0001722482-21-000179:0
106,200 shares@ US$30.9018.1% of flowCommon StockSEC:0001722482-21-000147:0
21 of 21 declarations
About Stubblefield Michael
Stubblefield Michael is President & CEO at Avantor, Inc. and Director at Ingersoll Rand Inc. The 21 filings recorded, all included in the recent sample, run from 2021-05-19 to 2025-05-21, with EUR 303393 of buys and EUR 5103816 of sells; the modal transaction nature is Tax withholding.
