As of November 6, 2026, Polaryx Therapeutics, Inc. is a publicly traded company (Nasdaq: PLYX). The largest holder reporting an active stake on Schedule 13D is Mstone Partners Healthcare Limited, at 48%. No bankruptcy or receivership appears in its SEC Form 8-K filings (Schedule 13D, February 5, 2026).
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Is Polaryx Therapeutics, Inc. a real, registered company?
- Polaryx Therapeutics, Inc. files with the SEC under CIK 2075320 (its SEC filings).
- Its shares are listed under the ticker PLYX on Nasdaq (SEC company record).
- Incorporated in Wyoming; business address in Paramus, New Jersey, as its SEC filings state.
- Court and bankruptcy records: see Before you sign or pay below.
Before you sign or pay
- Court and bankruptcy: No federal court case or bankruptcy filing found under Polaryx Therapeutics, Inc. in our court records and SEC 8-K records (as of 2026-11-06).
- Leadership changes: the latest reported is Lisa Bollinger, Chief Medical Officer (Form 8-K filed 2026-07-21). Check you are dealing with the people now in charge.
- Ownership: 5%+ holders are reported on Schedule 13D or 13G; the latest names Mstone Partners Healthcare Limited (filed 2026-02-05).
Who are Polaryx Therapeutics, Inc.'s owners and officers?
Polaryx Therapeutics, Inc.: incorporated in Wyoming; business address in Paramus, New Jersey; industry Pharmaceutical Preparations (Form D, 2026-07-21).
| Report | Holder | Share |
|---|---|---|
| Schedule 13D, 2026-02-05 | Mstone Partners Healthcare Limited | 48% |
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| Filed | Person | Role | Change | Effective |
|---|---|---|---|---|
| Form 8-K, 2026-07-21 | Lisa Bollinger | Chief Medical Officer | departed |
Which insiders own Polaryx Therapeutics, Inc. shares?
Directors, officers and holders of 10% or more report their shares on Forms 3, 4 and 5. Each line is the latest such report, largest holding first.
- Mstone Partners Healthcare Ltd, a director and 10% owner: 24,233,249 shares (48.6% of shares outstanding), held indirectly through By Mstone Partners Healthcare Limited, on a joint filing (Form 4, 2026-05-28).
- , the chief executive and a director: 24,233,249 shares (48.6% of shares outstanding), held indirectly through By Mstone Partners Healthcare Limited, on a joint filing (Form 4, 2026-05-28).
- , the chief investment officer: 471,808 shares (0.95% of shares outstanding) (Form 3, 2026-01-29).
- , the chief financial officer and a director: 228,225 shares (0.46% of shares outstanding) (Form 4, 2026-02-20).
- , the chief medical officer: 150,358 shares (0.30% of shares outstanding) (Form 3, 2026-01-29).
Shares outstanding: 49,845,993 as of 2026-07-31, from the company's latest SEC cover page.
How much has Polaryx Therapeutics, Inc. raised?
Latest IPO step: Polaryx Therapeutics, Inc. filed its final IPO prospectus (424B4, 2026-02-02).
IPO filings: 424B4, 2026-02-02, S-1/A, 2026-01-27, S-1/A, 2026-01-14, S-1, 2025-11-21.
Keep reading
More on Polaryx Therapeutics, Inc. and the records around it.
Polaryx Therapeutics, Inc. elsewhere on the record
- 5%+ stake filings Feb 2026
- Crowdfunding filing Oct 2025
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