THORNDIKE WILLIAM N JR

PrivateCIK: 1437827
Location

BOSTON, MA

THORNDIKE WILLIAM N JR sold 3.7% of their position (325K shares) of PERIMETER SOLUTIONS, INC. on the open market

Open‑market sale worth $7.60M — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 4 sales
InsiderTHORNDIKE WILLIAM N JRCIK 1437827
IssuerPERIMETER SOLUTIONS, INC.CIK 1880319
Director
Since Nov 2021
-325K
Net shares
Net seller
$7.60M
Total sold
4
Open market trades
0B · 4S
4
Total transactions
325K disposed
Non-Derivative Transactions4

Common Stock

Direct
S · Sale

Shares

90.04K

Price / share

$23.18

Trade value

$2.09M

% of position

1.0%
3/9/2026
8.86M8.77M

Common Stock

Direct
S · Sale

Shares

34.96K

Price / share

$23.85

Trade value

$833.72K

% of position

0.4%
3/9/2026
8.77M8.74M

Common Stock

Direct
S · Sale

Shares

100K

Price / share

$23.63

Trade value

$2.36M

% of position

1.1%
3/10/2026
8.74M8.64M

Common Stock

Direct
S · Sale

Shares

100K

Price / share

$23.18

Trade value

$2.32M

% of position

1.2%
3/11/2026
8.64M8.54M
Total

Net shares

325K

Net value

-$7.60M

Derivative Transactions0
No derivative transactions reported
THORNDIKE WILLIAM N JR — Insider Transaction (Form 4) Filed Mar 11, 2026 | Finecho