Insider Trading November 14, 2026 08:01 PM

MBX Biosciences CEO Hoerter Offloads $268,234 in Stock to Cover Tax Obligations

The sale of 4,893 shares was executed under a mandatory sell-to-cover agreement tied to vesting restricted stock units, leaving the CEO with direct and indirect holdings totaling 98,045 shares.

By Priya Menon
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MBX

Steven L. Hoerter, Chairman, President, and CEO of MBX Biosciences (NASDAQ:MBX), sold 4,893 shares for $268,234 on November 10, 2026, at a weighted average price of $54.82, to satisfy tax obligations related to vesting restricted stock units. The transaction was conducted under a mandatory sell-to-cover agreement. Following the sale, Hoerter directly holds 78,045 shares and indirectly holds 20,000 shares through a revocable trust. MBX stock currently trades at $55.94, up 8.9% over the past week and 126% over the last year. Analyst firms Citizens, Truist Securities, and Stifel have recently issued positive ratings and price targets for MBX, citing promising data for MBX-4291, an injectable obesity treatment. The company also appointed Peter Radovich as an independent director, expanding its board to eight members.

MBX Biosciences CEO Hoerter Offloads $268,234 in Stock to Cover Tax Obligations
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Key Points

  • CEO Steven Hoerter sold 4,893 shares for $268,234 to cover taxes on vesting restricted stock units, a routine transaction under a mandatory sell-to-cover agreement.
  • Following the sale, Hoerter retains 78,045 direct shares and 20,000 indirect shares, indicating continued significant ownership.
  • Analyst firms Citizens, Truist Securities, and Stifel have recently issued positive ratings and price targets for MBX, driven by promising data for MBX-4291, an obesity treatment.

Steven L. Hoerter, Chairman, President, and CEO of MBX Biosciences, Inc. (NASDAQ:MBX), disposed of 4,893 shares of the company’s common stock on November 10, 2026, generating proceeds of $268,234. The shares were sold at a weighted average price of $54.82, with individual transactions falling within a range of $51.52 to $55.29.

The sale was executed to satisfy tax withholding obligations arising from the vesting of restricted stock units, in accordance with a mandatory sell-to-cover arrangement with the company. Such arrangements are commonly used by executives to cover tax liabilities without requiring additional out-of-pocket cash.

Following the transaction, Hoerter directly holds 78,045 shares of MBX Biosciences common stock. In addition, he indirectly holds 20,000 shares through the Steven L Hoerter Revocable Trust.

MBX shares last traded at $55.94, reflecting an 8.9% gain over the past week and a 126% return over the last year. According to InvestingPro analysis, the stock appears fairly valued at current levels.

In other recent developments, MBX Biosciences has drawn attention from several analyst firms. Citizens has maintained its Market Outperform rating on the stock with a price target of $86, highlighting promising data from MBX-4291, an injectable obesity treatment that has shown potential for once-monthly dosing with minimal gastrointestinal side effects. Truist Securities also reiterated its Buy rating and set a slightly higher price target of $88, emphasizing a favorable risk/reward profile ahead of the drug’s data readout expected in the fourth quarter of 2026.

Additionally, Stifel raised its price target for MBX Biosciences to $84 while maintaining a Buy rating, citing positive data from the Phase 1 trial of MBX-4291. The trial’s Part-B results demonstrated a smooth pharmacokinetic profile and high tolerability.

On the corporate front, MBX Biosciences announced the appointment of Peter Radovich as an independent director, expanding its board to eight members. The appointment followed a recommendation by the company’s Nominating and Corporate Governance Committee.

Risks

  • The sale was tax-related and mandatory, but insider sales can still be perceived negatively by some investors, potentially pressuring the stock price in the short term.
  • The company’s valuation and future stock performance may be influenced by upcoming clinical data for MBX-4291, expected in Q4 2026, which carries inherent binary risk.
  • Board changes, such as the appointment of a new independent director, may bring shifts in governance or strategy that are not yet fully understood by the market.

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