Appointment · 13 October 2026
Harmony Biosciences Holdings, Inc.
HRMY · Listed
Key facts
- How the CEO left
- Retirement
- Planned or abrupt
- Planned
- Successor
- Internal (a current executive)
- Outgoing CEO stays as
- Adviser
- Signs it was forced
- None stated
- Other news alongside
- None
- Effective
- 1 January 2027
- Reason given
- retirement after a nine-year tenure
Read from the filing and press release by a language model (Google Gemini), told to use only that text. It can make mistakes; the quotes below are the source.
The announcement
Appointment of President and Chief Executive Officer and Director On October 12, 2026, the Company announced that Peter Anastasiou, the Company’s current Chief Operating Officer, has been appointed by the Board to serve as President and Chief Executive Officer of the Company, effective as of January 1, 2027, at 12:00 a.m.
Sentences matched by our CEO change rules, from the first filing. Read the 8-K on SEC EDGAR ↗
Share price reaction
The filing reached SEC EDGAR on 13 October 2026 at 08:00 New York time, before the market opened, so day 0 is that same day. Day 0 is marked by the vertical line.
| Window | HRMY | S&P 500 | Abnormal |
|---|---|---|---|
| Days 0 to +1 | −1.9% | −1.1% | −1.6% |
| Days 0 to +3 | −0.7% | −1.9% | −0.3% |
| 1 month (days 0 to +21)so far, 11 of 22 days | −0.7% | −1.1% | −1.3% |
| 3 months (days 0 to +63)so far, 11 of 64 days | −0.7% | −1.1% | −1.3% |
The abnormal return is the stock's return beyond what its usual relationship with the market (beta 0.47) predicts. A single stock's move can reflect other news on the same days, so it describes what happened rather than measuring the effect of the CEO change; averages across many events are on the Research design page as they are completed.
News coverage
- Harmony Biosciences Announces Planned CEO Transition to Support Next Phase of Growth ↗
manilatimes.net · 12 October 2026 · Tone: neutral
- Harmony Biosciences Stock Dives As CEO Jeffrey Dayno Plans His Exit ↗
investors.com · 12 October 2026 · Tone: negative
Headlines from the day before the filing to three days after, found in the GDELT news index by company name, so an occasional match may be about something else. Tone is FinBERT's reading of the headline alone, a language model trained on financial news; it is not our view of the change.