Insider Trading March 13, 2026

Apogee Therapeutics CEO Disposes of $1.5M in Shares Under 10b5-1 Plan

Michael Thomas Henderson sold nearly 20,000 shares on March 11 under a pre-arranged plan as analysts weigh valuation and upcoming data readouts

By Derek Hwang APGE
Apogee Therapeutics CEO Disposes of $1.5M in Shares Under 10b5-1 Plan
APGE

Apogee Therapeutics CEO Michael Thomas Henderson sold 19,990 shares of company stock on March 11, 2026, under a Rule 10b5-1 plan adopted in August 2025. The trades, executed at prices between $74.29 and $75.86, reduced Henderson's direct holdings to 1,152,987 shares. The sale occurs amid strong share gains over the past year and a mix of analyst reassessments tied to valuation and program milestones.

Key Points

  • Apogee CEO Michael Thomas Henderson sold 19,990 shares on March 11, 2026 under a Rule 10b5-1 plan adopted August 13, 2025 - Markets (equities), Healthcare (biotech) impacted
  • The trades were executed in multiple lots at prices from $74.29 to $75.86, leaving Henderson with 1,152,987 direct shares - Capital markets and corporate governance affected
  • APGE has risen roughly 80% over the past year and is trading at $71.90 with a $5.06 billion market cap; analysts express mixed views and flag upcoming clinical data - Healthcare and investor sentiment sectors impacted

Transaction details

Michael Thomas Henderson, the Chief Executive Officer of Apogee Therapeutics (NASDAQ:APGE), sold a total of 19,990 shares of common stock on March 11, 2026, for aggregate proceeds of approximately $1.5 million. The disposition was carried out in multiple transactions, with execution prices ranging from $74.29 to $75.86 per share.

The transactions are recorded in a Form 4 filing with the Securities and Exchange Commission and were carried out pursuant to a Rule 10b5-1 trading plan that Henderson adopted on August 13, 2025. The filing breaks the trades into component lots: 8,363 shares at a weighted average price of $74.29, 8,219 shares at a weighted average price of $74.83, and 3,418 shares at a weighted average price of $75.86.

Post-sale ownership and market context

After these sales, Henderson directly holds 1,152,987 shares of Apogee Therapeutics. The insider transaction comes as APGE stock has climbed about 80% over the past year. At the time of reporting the stock was trading at $71.90 with a market capitalization of $5.06 billion.

Valuation and financial thumbnail

According to InvestingPro analysis cited in the filing details, APGE appears overvalued relative to its Fair Value estimate. That platform's notes also highlight that Apogee carries more cash than debt on its balance sheet and has delivered strong returns, despite remaining unprofitable. The InvestingPro service indicates additional ProTips and comprehensive financial metrics are available on its platform.

Analyst activity and program milestones

Apogee has been the subject of multiple analyst updates. RBC Capital downgraded its rating from Outperform to Sector Perform, citing valuation concerns, while raising its price target to $83. RBC also referenced upcoming clinical data readouts for Apogee’s zumi candidate - noting Part A maintenance data expected in March and Part B induction data slated for the second quarter.

Jefferies adjusted its price target to $95 and retained a Buy rating following developments tied to the discontinuation of an Amgen OX40 collaboration. Craig-Hallum raised its price target to $116, citing encouraging Phase 1b data for Apogee’s zumilokibart program in asthma patients. UBS initiated coverage with a Buy rating and a $100 price target, pointing to the company’s emphasis on long-acting biologics.

Conclusion

The CEO sale, executed under a pre-established 10b5-1 plan, coincides with a period of elevated share prices and diverging analyst views on valuation and upcoming clinical catalysts. Investors assessing Apogee will likely weigh the insider liquidity event alongside the company’s cash position, profitability status, and forthcoming clinical readouts.


Risks

  • Valuation concern - Analysts and InvestingPro analysis indicate APGE may be overvalued relative to its Fair Value, which could influence investor sentiment in equity markets and the biotech sector
  • Profitability risk - The company remains unprofitable despite strong returns, posing financial risk to shareholders and affecting capital markets and biotech investors
  • Clinical and development uncertainty - Upcoming Part A and Part B data readouts for the zumi candidate create event-driven risk for the company and could materially affect stock performance in the healthcare sector

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