$MBX

MBX Biosciences, Inc. (MBX) filed an SEC Form 8-K — Results of Operations and Financial Condition. EX-99.1 2 mbx-ex99_1.htm EX-99.1 EX-99.1 EXHIBIT 99.1 MBX Biosciences Reports Second Quarter 2026 Financial Results and Corporate Highlights One-year data demonstrated sustained benefit of once-weekly canvuparatide as a potential PTH replacement therapy in chronic hypoparathyroid

MBX Biosciences, a Carmel-based biopharmaceutical company, said CEO and co-founder Kent Hawryluk stepped down. Steve Hoerter, previously executive chairman, became CEO and board chair, and John Smither was appointed CFO. The changes took effect Monday. MBX, which raised over $213M and went public in Sept 2024, is advancing precision peptide therapies including canvuparatide (Phase 3).

Midday movers included CleanSpark, up 11% after a 20-year Georgia data center lease totaling $6.6B in contracted revenue. HCA Healthcare fell over 7% after lowering full-year EPS to $28.70-$30.50. Banks and others moved on Q2 results, including Goldman Sachs up 7% and IBM down 25% on weaker preliminary earnings.

MBX Biosciences (Nasdaq: MBX) announced leadership changes. Steve Hoerter, previously Executive Chairman, becomes Chairman and CEO, replacing Kent Hawryluk, who steps down as President and CEO. John Smither, interim CFO since March 2026, is appointed CFO. The company said it remains on track for Phase 3 canvuparatide and obesity pipeline milestones in 2H 2026.

MBX Biosciences, Inc. (MBX) filed an SEC Form 8-K — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers. 8-K false 0001776111 0001776111 2026-07-09 2026-07-09 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 9, 2

MBX Biosciences (NASDAQ:MBX) shares fell 8.3% in after-hours after the company announced leadership changes. Steve Hoerter became Chairman and CEO, replacing Kent Hawryluk. John Smither was appointed permanent CFO. MBX said it remains on track for Phase 3 canvuparatide milestones and other 2026 pipeline updates.

MBX Biosciences said new Phase 2 data for canvuparatide in hypoparathyroidism show sustained control of albumin-adjusted serum calcium and physiologic PTH replacement through one year. The company reported 63% of patients met the 12-week primary endpoint vs 31% on placebo, and 57% were responders without rescue therapy at one year. Canvuparatide was generally well tolerated; MBX plans to start Phase 3 in Q3 2026. Shares were down 4.86% to $35.44.

MBX Biosciences CMO Salomon Azoulay, according to an SEC Form 4, exercised 70,003 options and immediately sold the resulting shares for about $2.69 million. He still holds 224,548 direct stock options. The filing indicates the sale followed a Rule 10b5-1 plan.

MBX Biosciences President & CEO P. Kent Hawryluk sold 607 shares of company stock at a weighted average price of $29.54 per share. This sale was conducted to cover tax obligations stemming from the vesting of restricted stock units, as part of a mandatory sell-to-cover agreement. Following the transaction, Hawryluk directly holds 727,667 common shares and indirectly holds an additional 486,777 shares through a revocable trust.

MBX Biosciences announced an equity inducement award to Karen Basbaum, their new Chief Business Officer, consisting of non-qualified stock options for 130,000 shares. This grant aligns with the company's strategy to attract top talent and advance its pipeline of precision peptide therapies for endocrine and metabolic disorders. The stock options will vest over four years, with a 10-year term, demonstrating MBX Biosciences' commitment to strengthening its leadership team and fostering innovation.