Bertrand Loy

Insider Reports History

Identity Names, identifiers, and filing context for this profile. 1 identity field
Reporting-owner location
Billerica, MA
SEC source record Original filing metadata and source links for verification. 1 source field
Latest reporting-owner signature
/s/ Serena S. Kenost, Attorney-in-Fact for Bertrand Loy
Source: Latest parsed Forms 3/4/5 signature
Source evidence Original filing metadata and source links for verification. 1 source field
Transaction source note
Rows are grouped by transaction date from the original SEC filing. Open the aggregated insider activity page to review issuer-level activity across dates.

Reported holdings for Bertrand Loy

Form 4 holding Executive Chair, Director

ENTEGRIS INC

Security class
Common Stock
Shares / value
227,527
Estimated value
$32,857,174
Report date
17 Apr 2026
Price
$144.41
Ownership
Direct
Form 4 holding Director

HARVARD BIOSCIENCE INC

Security class
Common Stock
Shares / value
499,633
Estimated value
$2,053,492
Report date
21 May 2024
Price
$4.11
Ownership
by Bertrand M. Loy Revocable Trust
Form 4 holding Director

HARVARD BIOSCIENCE INC

Security class
Common Stock
Shares / value
56,575
Estimated value
$232,523
Report date
21 May 2024
Price
$4.11
Ownership
Direct
Form 4 holding Director

ASHLAND INC.

Security class
Restricted Stock Units
Shares / value
1,741
Estimated value
Report date
15 May 2026
Price
Ownership
Direct
Underlying class
Common Stock
Underlying amount
Form 4 holding Executive Chair, Director

ENTEGRIS INC

Security class
Employee Stock Option (Right to Buy)
Shares / value
0
Estimated value
Report date
17 Apr 2026
Price
Ownership
Direct
Underlying class
Common Stock
Underlying amount

Insider Reports Filed by Bertrand Loy

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