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 JS
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Detailed Insider History for:
AVANTOR INC: AVTR
Price: 7/4/25 52-Wk
High		 52-Wk
Low		 Mkt Cap (mm) Shrs Out (mm) 3-Mth Ave
Vol (m)		 Ind. Yield Short Int
% Float		 Inst. Owned Insider Owned
$13.88 $28.00 $11.82 $9,458 681 12,860 0.0% 6.3% 103.17% 1.35%
Exch Sector Industry Sub-Industry
NYSE Manufacturing Measuring, Analyzing, And Controlling Instruments; Photographic, Medical And Optical Goods; Watches And Clocks Laboratory Analytical Instruments
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Insider Statistics
T N H M S
Filer Name
Insider Title
Trans Type
Dollar Value
Shares Traded
Trans Date From
Trans Date To
Trans Price From
Trans Price To
Total Holdings
Delta % Owned
Owned
Other Info
Input Date
1
    
 
WALKER COREY
PR
JS
$37,046
2,730
---
6/21/25
---
$13.57
231,271
-1.2
D
---
6/24/25 - 5:20:19 pm
2
1m
4
100%
7%
6
SUMME GREGORY L
DIR
B
$375,000
30,000
---
5/23/25
---
$12.50
100,000
42.9
I
---
5/27/25 - 4:58:03 pm
3
1m
4
100%
7%
6
SUMME GREGORY L
DIR
B
$253,000
20,000
---
5/22/25
---
$12.65
70,000
40.0
I
---
5/22/25 - 5:37:34 pm
4
    
 
STUBBLEFIELD MICHAEL
PR,CEO,DIR
JS
---
76,000
---
5/21/25
---
---
1,219,013
-5.9
D
---
5/21/25 - 5:37:32 pm
5
    
 
STUBBLEFIELD MICHAEL
PR,CEO,DIR
JB
---
76,000
---
5/21/25
---
---
545,500
16.2
I
---
5/21/25 - 5:37:32 pm
6
    
 
WALKER COREY
PR
JB
---
162,866
---
5/9/25
---
---
234,001
229.0
D
R
5/12/25 - 5:35:49 pm
7
    
 
ECK STEVEN W
VP,CAO
JB
---
20,358
---
5/9/25
---
---
59,929
51.4
D
R
5/12/25 - 5:35:27 pm
8
    
 
SOKENU CLAUDIUS
VP,LO,CO
JB
---
122,149
---
5/9/25
---
---
180,229
210.3
D
R
5/12/25 - 5:35:17 pm
9
    
 
HANKAMER BRITTANY
VP,HR
JB
---
122,149
---
5/9/25
---
---
171,744
246.3
D
R
5/12/25 - 5:34:42 pm
10
    
 
COUTURIER CHRISTOPHE
VP
JB
---
61,074
---
5/9/25
---
---
144,914
72.8
D
R
5/12/25 - 5:33:54 pm
11
    
 
JONES R BRENT
VP,CFO
JB
---
162,866
---
5/9/25
---
---
269,676
152.5
D
R
5/12/25 - 5:33:30 pm
12
    
 
GOURDIER BENOIT
VP
JB
---
162,866
---
5/9/25
---
---
236,948
219.8
D
R
5/12/25 - 5:32:54 pm
13
    
 
CARETHERS JOHN
DIR
JB
---
17,100
---
5/8/25
---
---
45,858
59.5
D
R
5/12/25 - 5:35:39 pm
14
    
 
SUMME GREGORY L
DIR
JB
---
17,100
---
5/8/25
---
---
58,111
41.7
D
R
5/12/25 - 5:35:05 pm
15
    
 
MASSARO JOSEPH R
DIR
JB
---
17,100
---
5/8/25
---
---
52,138
48.8
D
R
5/12/25 - 5:34:54 pm
16
    
 
PEACOCK JONATHAN M
DIR
JB
---
17,100
---
5/8/25
---
---
219,815
8.4
D
R
5/12/25 - 5:34:31 pm
17
    
 
KANG LAN
DIR
JB
---
17,100
---
5/8/25
---
---
52,315
48.6
D
R
5/12/25 - 5:34:18 pm
18
    
 
MURTHY MALA
DIR
JB
---
17,100
---
5/8/25
---
---
44,209
63.1
D
R
5/12/25 - 5:34:06 pm
19
    
 
ANDRES JUAN
DIR
JB
---
17,100
---
5/8/25
---
---
65,480
35.3
D
R
5/12/25 - 5:33:42 pm
20
    
 
MAKIN LOUISE
DIR
JB
---
17,100
---
5/8/25
---
---
21,870
358.5
D
R
5/12/25 - 5:33:17 pm
21
    
 
SEVERINO MICHAEL
DIR
JB
---
17,100
---
5/8/25
---
---
60,551
39.4
D
R
5/12/25 - 5:33:08 pm
22
1m
4
100%
7%
6
SUMME GREGORY L
DIR
B
$300,000
25,000
---
5/7/25
---
$12.00
50,000
100.0
I
---
5/9/25 - 4:51:58 pm
23
1m
1
100%
3%
3
MASSARO JOSEPH R
DIR
B
$99,630
8,100
---
4/29/25
---
$12.30
35,038
30.1
D
---
4/29/25 - 5:58:52 pm
24
1m
4
100%
7%
6
SUMME GREGORY L
DIR
B
$312,500
25,000
---
4/28/25
---
$12.50
25,000
New
I
---
4/29/25 - 5:58:40 pm
25
    
 
KANG LAN
DIR
B
$62,850
5,000
---
4/28/25
---
$12.57
35,215
16.5
D
---
4/29/25 - 5:58:29 pm
26
1m
1
100%
3%
2
PEACOCK JONATHAN M
DIR
B
$103,646
8,091
---
4/28/25
---
$12.81
202,715
4.2
D
---
4/29/25 - 5:58:18 pm
27
    
 
COUTURIER CHRISTOPHE
VP
JS
$8,609
569
---
4/5/25
---
$15.13
83,840
-0.7
D
---
4/8/25 - 5:01:26 pm
28
    
 
WALKER COREY
PR
3
---
---
---
3/31/25
---
---
71,135
---
D
R
4/8/25 - 5:01:39 pm
29
    
 
BRAMWELL JAMES
VP,SO
S
$79,036
4,532
2/26/25
2/27/25
---
$17.00
86,605
-5.0
D
---
2/28/25 - 4:53:22 pm
30
    
 
ECK STEVEN W
VP,CAO
S
$103,581
5,940
2/26/25
2/27/25
---
$17.00
39,571
-13.1
D
---
2/28/25 - 4:51:17 pm
31
    
 
COUTURIER CHRISTOPHE
VP
JS
$22,866
1,306
2/24/25
2/25/25
$17.47
$17.56
84,409
-1.5
D
---
2/26/25 - 4:45:16 pm
32
    
 
STUBBLEFIELD MICHAEL
PR,CEO,DIR
JS
$206,052
11,769
2/24/25
2/25/25
$17.47
$17.56
1,448,022
-0.8
D
---
2/26/25 - 4:45:04 pm
33
    
 
ECK STEVEN W
VP,CAO
JS
$16,537
944
2/24/25
2/25/25
$17.47
$17.56
45,511
-2.0
D
---
2/26/25 - 4:44:54 pm
34
    
 
BRAMWELL JAMES
VP,SO
JS
$48,340
2,764
2/24/25
2/25/25
$17.47
$17.56
91,137
-2.9
D
---
2/26/25 - 4:44:43 pm
35
    
 
HANKAMER BRITTANY
VP,HR
JS
$14,114
806
2/24/25
2/25/25
$17.47
$17.56
49,595
-1.6
D
---
2/26/25 - 4:44:27 pm
36
    
 
GOURDIER BENOIT
VP
JS
$49,167
2,842
---
2/23/25
---
$17.30
74,082
-3.7
D
R
2/24/25 - 5:31:13 pm
37
    
 
ECK STEVEN W
VP,CAO
JS
$33,839
1,956
---
2/23/25
---
$17.30
46,455
-4.0
D
R
2/24/25 - 5:31:03 pm
38
    
 
HANKAMER BRITTANY
VP,HR
JS
$26,590
1,537
---
2/23/25
---
$17.30
50,401
-3.0
D
R
2/24/25 - 5:30:53 pm
39
    
 
SOKENU CLAUDIUS
VP,LO,CO
JS
$40,101
2,318
---
2/23/25
---
$17.30
58,080
-3.8
D
R
2/24/25 - 5:30:43 pm
40
    
 
STUBBLEFIELD MICHAEL
PR,CEO,DIR
JS
$253,860
14,674
---
2/23/25
---
$17.30
1,459,791
-1.0
D
R
2/24/25 - 5:30:24 pm
41
    
 
BRAMWELL JAMES
VP,SO
JS
$59,564
3,443
---
2/23/25
---
$17.30
93,901
-3.5
D
---
2/24/25 - 5:30:14 pm
42
    
 
COUTURIER CHRISTOPHE
VP
JS
$26,054
1,506
---
2/23/25
---
$17.30
85,715
-1.7
D
R
2/24/25 - 5:30:02 pm
43
    
 
GOURDIER BENOIT
VP
JB
---
35,734
---
2/20/25
---
---
76,924
86.8
D
R
2/24/25 - 5:31:13 pm
44
    
 
ECK STEVEN W
VP,CAO
JB
---
18,867
---
2/20/25
---
---
48,411
63.9
D
R
2/24/25 - 5:31:03 pm
45
    
 
HANKAMER BRITTANY
VP,HR
JB
---
17,152
---
2/20/25
---
---
51,938
49.3
D
R
2/24/25 - 5:30:53 pm
46
    
 
SOKENU CLAUDIUS
VP,LO,CO
JB
---
21,440
---
2/20/25
---
---
60,398
55.0
D
R
2/24/25 - 5:30:43 pm
47
    
 
JONES R BRENT
VP,CFO
JB
---
80,045
---
2/20/25
---
---
106,810
299.1
D
R
2/24/25 - 5:30:33 pm
48
    
 
STUBBLEFIELD MICHAEL
PR,CEO,DIR
JB
---
157,232
---
2/20/25
---
---
1,474,465
11.9
D
R
2/24/25 - 5:30:24 pm
49
    
 
COUTURIER CHRISTOPHE
VP
JB
---
12,864
---
2/20/25
---
---
87,221
17.3
D
R
2/24/25 - 5:30:02 pm
50
    
 
MAKIN LOUISE
DIR
JB
---
4,770
---
11/4/24
---
---
4,770
New
D
R
11/6/24 - 5:29:11 pm
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