BALLHAUS WILLIAM L

PrivateCIK: 1436044
Location

ANDOVER, MA

BALLHAUS WILLIAM L sold 36.6% of their position (173.21K shares) of MERCURY SYSTEMS INC on the open market

Open‑market sale worth $15.69M — a major position exit. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 4 sales
InsiderBALLHAUS WILLIAM LCIK 1436044
IssuerMERCURY SYSTEMS INCCIK 1049521
Director
Since Jun 2022
-173.21K
Net shares
Net seller
$15.69M
Total sold
4
Open market trades
0B · 4S
10
Total transactions
244.85K acquired · 418.06K disposed
Non-Derivative Transactions7

Common Stock

Direct
M · Option Exercise

Shares

+92.85K

Price / share

$42.00

Trade value

$3.90M

% of position

40.7%
8/21/2026
228.20K321.05K

Common Stock

Direct
S · Sale

Shares

64.80K

Price / share

$92.40

Trade value

$5.99M

% of position

20.2%
8/21/2026
321.05K256.25K

Common Stock

Direct
S · Sale

Shares

204.00

Price / share

$93.51

Trade value

$19.08K

% of position

0.1%
8/21/2026
256.25K256.05K

Common Stock

Direct
M · Option Exercise

Shares

+140.65K

Price / share

$42.00

Trade value

$5.91M

% of position

54.9%
8/24/2026
256.05K396.70K

Common Stock

Direct
M · Option Exercise

Shares

+11.35K

Price / share

$43.00

Trade value

$487.96K

% of position

2.9%
8/24/2026
396.70K408.05K

Common Stock

Direct
S · Sale

Shares

105.47K

Price / share

$89.47

Trade value

$9.44M

% of position

25.8%
8/24/2026
408.05K302.57K

Common Stock

Direct
S · Sale

Shares

2.74K

Price / share

$90.60

Trade value

$248.06K

% of position

0.9%
8/24/2026
302.57K299.84K
Total

Net shares

+71.64K

Net value

-$5.40M

Derivative Transactions3

Employee Stock Option (Right to Buy)

Direct
M · Option Exercise
Converts to

Common Stock

92.85K shares

Shares

92.85K

Strike price

42.00

Held after

140.65K

Exercisable

8/21/2026

Employee Stock Option (Right to Buy)

Direct
M · Option Exercise
Converts to

Common Stock

140.65K shares

Shares

140.65K

Strike price

42.00

Held after

0.00

Exercisable

8/24/2026

Employee Stock Option (Right to Buy)

Direct
M · Option Exercise
Converts to

Common Stock

11.35K shares

Shares

11.35K

Strike price

43.00

Held after

222.15K

Exercisable

8/24/2026
Non-Derivative Holdings (Post-Transaction)2

Common Stock

Indirect
Shares owned7.07K

Common Stock

Indirect
Shares owned1.40K
Total
8.47K indirect8.47K
Derivative Holdings (Post-Transaction)0
No derivative holdings reported