MBX
insider transactionsMBX Biosciences, Inc. — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
Net shares · 90d
-70.8K
0 buy · 70.8K sell
Net value · 90d
-$2.7M
$0 in · $2.7M out
Sentiment · 90d
Net selling
0% buying · 100% selling
Open-market trades · 90d
4
0 buy · 70.8K sell
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
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Exercise·M
Chief Medical Officer · 10b5-1
$0
15.0K sh
Own +100%
-
Exercise·M
Chief Medical Officer · 10b5-1
$0
55.0K sh
Own +39%
-
Sell·S
Chief Medical Officer · 10b5-1
$574.6K
15.0K sh · $38.30
Own -50%
-
Exercise·M
Chief Medical Officer · 10b5-1
$240.0K
15.0K sh · $16.00
Own +102%
-
Sell·S
Chief Medical Officer · 10b5-1
$2.1M
55.0K sh · $38.38
Own -79%
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Exercise·M
Chief Medical Officer · 10b5-1
$575.3K
55.0K sh · $10.46
Own +372%
-
Sell·S
Hawryluk P. Kent KEY
President & CEO
$17.9K
607 sh · $29.54
Own -0%
-
Sell·S
Chief Medical Officer
$6.8K
231 sh · $29.54
Own -2%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| May 8, 2026 | Azoulay Salomon 10b5-1 | Exercise M | 15.0K | $0 |
| May 8, 2026 | Azoulay Salomon 10b5-1 | Exercise M | 55.0K | $0 |
| May 8, 2026 | Azoulay Salomon 10b5-1 | Sell S | 15.0K | $574.6K |
| May 8, 2026 | Azoulay Salomon 10b5-1 | Exercise M | 15.0K | $240.0K |
| May 8, 2026 | Azoulay Salomon 10b5-1 | Sell S | 55.0K | $2.1M |
| May 8, 2026 | Azoulay Salomon 10b5-1 | Exercise M | 55.0K | $575.3K |
| May 6, 2026 | Hawryluk P. Kent KEY | Sell S | 607 | $17.9K |
| May 6, 2026 | Azoulay Salomon | Sell S | 231 | $6.8K |
About MBX insider trading
This page tracks insider transactions for MBX Biosciences, Inc. (MBX) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.