HSING MICHAEL (CEO) sold 3.6% of their position (33K shares) of MONOLITHIC POWER SYSTEMS INC on the open market

Open‑market sale worth $38.67M — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 12 sales

HSING MICHAEL

Filed: 2/17/2026ACC: 0001214659-26-002084

InsiderHSING MICHAELCIK 1308676

→

IssuerMONOLITHIC POWER SYSTEMS INCCIK 1280452

DirectorOfficer· CEO

Since Jul 2018

-33K

Net shares

Net seller

$38.67M

Total sold

Open market trades

0B · 12S

Total transactions

33K disposed

Non-Derivative Transactions12

Common Stock

Direct

S · Sale

−12.73K

Price / share

$1.16K

Trade value

$14.71M

% of position

1.4%

2/12/2026

921.23K→908.50K

Common Stock

Direct

S · Sale

−4.99K

Price / share

$1.16K

Trade value

$5.79M

% of position

0.5%

2/12/2026

908.50K→903.51K

Common Stock

Direct

S · Sale

−4K

Price / share

$1.16K

Trade value

$4.66M

% of position

0.4%

2/12/2026

903.51K→899.51K

Common Stock

Direct

S · Sale

−2.08K

Price / share

$1.17K

Trade value

$2.43M

% of position

0.2%

2/12/2026

899.51K→897.43K

Common Stock

Direct

S · Sale

−200.00

Price / share

$1.17K

Trade value

$234.68K

% of position

0.0%

2/12/2026

897.43K→897.23K

Common Stock

Direct

S · Sale

−480.00

Price / share

$1.18K

Trade value

$566.78K

% of position

0.1%

2/12/2026

897.23K→896.75K

Common Stock

Direct

S · Sale

−160.00

Price / share

$1.19K

Trade value

$190.12K

% of position

0.0%

2/12/2026

896.75K→896.59K

Common Stock

Direct

S · Sale

−600.00

Price / share

$1.19K

Trade value

$716.60K

% of position

0.1%

2/12/2026

896.59K→895.99K

Common Stock

Direct

S · Sale

−1.44K

Price / share

$1.20K

Trade value

$1.73M

% of position

0.2%

2/12/2026

895.99K→894.55K

Common Stock

Direct

S · Sale

−3.64K

Price / share

$1.21K

Trade value

$4.39M

% of position

0.4%

2/12/2026

894.55K→890.91K

Common Stock

Direct

S · Sale

−1.24K

Price / share

$1.21K

Trade value

$1.50M

% of position

0.1%

2/12/2026

890.91K→889.67K

Common Stock

Direct

S · Sale

−1.44K

Price / share

$1.22K

Trade value

$1.75M

% of position

0.2%

2/12/2026

889.67K→888.23K

Total

Net shares

−33K

Net value

-$38.67M

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	2/12/2026	S · Sale	−12.73K	$1.16K	$14.71M	1.4%	921.23K	908.50K
Common Stock Direct	2/12/2026	S · Sale	−4.99K	$1.16K	$5.79M	0.5%	908.50K	903.51K
Common Stock Direct	2/12/2026	S · Sale	−4K	$1.16K	$4.66M	0.4%	903.51K	899.51K
Common Stock Direct	2/12/2026	S · Sale	−2.08K	$1.17K	$2.43M	0.2%	899.51K	897.43K
Common Stock Direct	2/12/2026	S · Sale	−200.00	$1.17K	$234.68K	0.0%	897.43K	897.23K
Common Stock Direct	2/12/2026	S · Sale	−480.00	$1.18K	$566.78K	0.1%	897.23K	896.75K
Common Stock Direct	2/12/2026	S · Sale	−160.00	$1.19K	$190.12K	0.0%	896.75K	896.59K
Common Stock Direct	2/12/2026	S · Sale	−600.00	$1.19K	$716.60K	0.1%	896.59K	895.99K
Common Stock Direct	2/12/2026	S · Sale	−1.44K	$1.20K	$1.73M	0.2%	895.99K	894.55K
Common Stock Direct	2/12/2026	S · Sale	−3.64K	$1.21K	$4.39M	0.4%	894.55K	890.91K
Common Stock Direct	2/12/2026	S · Sale	−1.24K	$1.21K	$1.50M	0.1%	890.91K	889.67K
Common Stock Direct	2/12/2026	S · Sale	−1.44K	$1.22K	$1.75M	0.2%	889.67K	888.23K
Total			−33K		-$38.67M

Derivative Transactions0

No derivative transactions reported

Non-Derivative Holdings (Post-Transaction)2

Common Stock

Indirect

Shares owned133.04K

Common Stock

Indirect

Shares owned12.82K

Total

145.87K indirect145.87K

Security Title	Shares Owned	Ownership Type
Common Stock	133.04K	Indirect
Common Stock	12.82K	Indirect
Total	145.87K	145.87K indirect

Derivative Holdings (Post-Transaction)0

No derivative holdings reported