SCIAMMAS MAURICE

PrivateCIK: 1360833
Location

SAN JOSE, CA

SCIAMMAS MAURICE (Sr. V.P.of Sales and Marketing) sold 6.7% of their position (12K shares) of MONOLITHIC POWER SYSTEMS INC on the open market

Open‑market sale worth $18.74M — a moderate reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 8 sales
InsiderSCIAMMAS MAURICECIK 1360833
Officer· Sr. V.P.of Sales and Marketing
Since Aug 2018
-12K
Net shares
Net seller
$18.74M
Total sold
8
Open market trades
0B · 8S
8
Total transactions
12K disposed
Non-Derivative Transactions8

Common Stock

Direct
S · Sale

Shares

3.74K

Price / share

$1.55K

Trade value

$5.80M

% of position

2.1%
5/15/2026
178.64K174.90K

Common Stock

Direct
S · Sale

Shares

1.72K

Price / share

$1.56K

Trade value

$2.67M

% of position

1.0%
5/15/2026
174.90K173.19K

Common Stock

Direct
S · Sale

Shares

2.01K

Price / share

$1.56K

Trade value

$3.14M

% of position

1.2%
5/15/2026
173.19K171.18K

Common Stock

Direct
S · Sale

Shares

2.02K

Price / share

$1.57K

Trade value

$3.17M

% of position

1.2%
5/15/2026
171.18K169.16K

Common Stock

Direct
S · Sale

Shares

1.31K

Price / share

$1.57K

Trade value

$2.06M

% of position

0.8%
5/15/2026
169.16K167.84K

Common Stock

Direct
S · Sale

Shares

703.00

Price / share

$1.58K

Trade value

$1.11M

% of position

0.4%
5/15/2026
167.84K167.14K

Common Stock

Direct
S · Sale

Shares

447.00

Price / share

$1.58K

Trade value

$707.25K

% of position

0.3%
5/15/2026
167.14K166.69K

Common Stock

Direct
S · Sale

Shares

50.00

Price / share

$1.59K

Trade value

$79.28K

% of position

0.0%
5/15/2026
166.69K166.64K
Total

Net shares

12K

Net value

-$18.74M

Derivative Transactions0
No derivative transactions reported
Non-Derivative Holdings (Post-Transaction)11

Common Stock

Indirect
Shares owned1.70K

Common Stock

Indirect
Shares owned919.00

Common Stock

Indirect
Shares owned4.01K

Common Stock

Indirect
Shares owned25.10K

Common Stock

Indirect
Shares owned1.70K

Common Stock

Indirect
Shares owned1K

Common Stock

Indirect
Shares owned1.70K

Common Stock

Indirect
Shares owned5K

Common Stock

Indirect
Shares owned51.02K

Common Stock

Indirect
Shares owned1.21K

Common Stock

Indirect
Shares owned2K
Total
95.36K indirect95.36K
Derivative Holdings (Post-Transaction)0
No derivative holdings reported
SCIAMMAS MAURICE — Insider Transaction (Form 4) Filed May 19, 2026 | Finecho