READ SIMON sold 2.78K shares of DIANTHUS THERAPEUTICS, INC. /DE/ on the open market
Open‑market sale worth $326.6K. Review remaining holdings and any 10b5‑1 plan disclosures.
S · 1 sale
Filed: 8/19/2026ACC: 0001688199-26-000006
Director
Since May 2025
-2.78K
Net shares
Net seller
$326.6K
Total sold
1
Open market trades
0B · 1S
3
Total transactions
2.78K acquired · 5.56K disposed
Non-Derivative Transactions2
Common Stock
Direct
Shares
+2.78K
Price / share
$18.36
Trade value
$51K
% of position
New position
8/19/2026
0.00→2.78K
Common Stock
Direct
Shares
−2.78K
Price / share
$117.55
Trade value
$326.55K
% of position
New position
8/19/2026
2.78K→0.00
Total
Net shares
+0.00
Net value
-$275.55K
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Common Stock Direct | 8/19/2026 | M · Option Exercise | +2.78K | $18.36 | $51K | New position | 0.00 | 2.78K |
| Common Stock Direct | 8/19/2026 | S · Sale | −2.78K | $117.55 | $326.55K | New position | 2.78K | 0.00 |
| Total | +0.00 | -$275.55K | ||||||
Derivative Transactions1
Stock Option (Right to Buy)
Direct
Converts to
Common Stock
2.78K shares
Shares
−2.78K
Strike price
18.36
Held after
19.45K
Exercisable
—
8/19/2026
| Security | Converts To | Date | Type | Shares | Strike Price | Exercisable | Held After |
|---|---|---|---|---|---|---|---|
| Stock Option (Right to Buy) Direct | Common Stock2.78K shares | 8/19/2026 | M · Option Exercise | −2.78K | 18.36 | — | 19.45K |