READ SIMON

PrivateCIK: 1688199
Location

NEW YORK, NY

READ SIMON sold 2.78K shares of DIANTHUS THERAPEUTICS, INC. /DE/ on the open market

Open‑market sale worth $304.2K. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 6 sales
InsiderREAD SIMONCIK 1688199
Director
Since May 2025
-2.78K
Net shares
Net seller
$304.2K
Total sold
6
Open market trades
0B · 6S
8
Total transactions
2.78K acquired · 5.55K disposed
Non-Derivative Transactions7

Common Stock

Direct
M · Option Exercise

Shares

+2.78K

Price / share

$18.36

Trade value

$50.99K

% of position

New position
8/10/2026
0.002.78K

Common Stock

Direct
S · Sale

Shares

70.00

Price / share

$107.11

Trade value

$7.50K

% of position

2.5%
8/10/2026
2.78K2.71K

Common Stock

Direct
S · Sale

Shares

737.00

Price / share

$108.17

Trade value

$79.72K

% of position

27.2%
8/10/2026
2.71K1.97K

Common Stock

Direct
S · Sale

Shares

831.00

Price / share

$108.95

Trade value

$90.54K

% of position

42.2%
8/10/2026
1.97K1.14K

Common Stock

Direct
S · Sale

Shares

272.00

Price / share

$109.96

Trade value

$29.91K

% of position

23.9%
8/10/2026
1.14K867.00

Common Stock

Direct
S · Sale

Shares

470.00

Price / share

$111.05

Trade value

$52.19K

% of position

54.2%
8/10/2026
867.00397.00

Common Stock

Direct
S · Sale

Shares

397.00

Price / share

$111.77

Trade value

$44.37K

% of position

New position
8/10/2026
397.000.00
Total

Net shares

+0.00

Net value

-$253.25K

Derivative Transactions1

Stock Option (Right to Buy)

Direct
M · Option Exercise
Converts to

Common Stock

2.78K shares

Shares

2.78K

Strike price

18.36

Held after

22.22K

Exercisable

8/10/2026