HAWRYLUK P. KENT (President & CEO) exercised options at MBX BIOSCIENCES, INC.
Option exercise — a mechanical event triggered by vesting or expiry. Not a discretionary conviction trade.
M · 1 exercise
Filed: 10/28/2025ACC: 0001193125-25-252404
DirectorOfficer· President & CEO
Since Feb 2026
0.00
Net shares
Net seller
$594.3K
Total acquired
0
Open market trades
0B · 0S
2
Total transactions
182.86K acquired · 182.86K disposed
Non-Derivative Transactions1
Common Stock
Direct
Shares
+182.86K
Price / share
$3.25
Trade value
$594.29K
% of position
38.0%
10/24/2025
481.40K→664.26K
Total
Net shares
+182.86K
Net value
$594.29K
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Common Stock Direct | 10/24/2025 | M · Option Exercise | +182.86K | $3.25 | $594.29K | 38.0% | 481.40K | 664.26K |
| Total | +182.86K | $594.29K | ||||||
Derivative Transactions1
Stock option (right to buy)
Direct
Converts to
Common Stock
182.86K shares
Shares
−182.86K
Strike price
3.25
Held after
129.71K
Exercisable
—
10/24/2025
| Security | Converts To | Date | Type | Shares | Strike Price | Exercisable | Held After |
|---|---|---|---|---|---|---|---|
| Stock option (right to buy) Direct | Common Stock182.86K shares | 10/24/2025 | M · Option Exercise | −182.86K | 3.25 | — | 129.71K |
Non-Derivative Holdings (Post-Transaction)1
Common Stock
IndirectShares owned468.28K
Total
468.28K indirect468.28K
| Security Title | Shares Owned | Ownership Type |
|---|---|---|
| Common Stock | 468.28K | Indirect |
| Total | 468.28K | 468.28K indirect |
Derivative Holdings (Post-Transaction)0
No derivative holdings reported