Alex Keun Mo Yang - Chief Executive Officer, Director, 10%+ Owner at Polaryx Therapeutics, Inc.

Issuer-level insider activity

Role: Chief Executive Officer, Director, 10%+ Owner
Issuer ticker: PLYX on Nasdaq
Entity type: Individual
Source filing history: Open source filing history

Past-year transaction volume for Alex Keun Mo Yang in Polaryx Therapeutics, Inc.

Buys

Open market

Shares: +88,453
Avg price: $4.07
Total value: +$360,004

Sells

Open market

Shares
Avg price
Total value

Net

Past year

Shares: +88,453
Share %: 100%
Total value: +$360,004

Reported holdings for Alex Keun Mo Yang in Polaryx Therapeutics, Inc.

Form 4 holding Director, 10%+ Owner

Polaryx Therapeutics, Inc.

Security class: Common Stock
Shares / value: 24,233,249
Estimated value: $98,629,323
Report date: 27 May 2026
Price: $4.07
Ownership: By Mstone Partners Healthcare Limited

Form 4 holding Chief Executive Officer, Director, 10%+ Owner

Polaryx Therapeutics, Inc.

Security class: Common Stock
Shares / value: 24,233,249
Estimated value: $98,629,323
Report date: 27 May 2026
Price: $4.07
Ownership: By Mstone Partners Healthcare Limited

Form 4 holding Chief Executive Officer, Director, 10%+ Owner

Polaryx Therapeutics, Inc.

Security class: Common Stock
Shares / value: 1,400,000
Estimated value: $4,088,000
Report date: 29 Jan 2026
Price: $2.92
Ownership: Direct

Form 4 holding Chief Executive Officer, Director, 10%+ Owner

Polaryx Therapeutics, Inc.

Security class: Common Stock
Shares / value: 183,560
Estimated value: $535,995
Report date: 29 Jan 2026
Price: $2.92
Ownership: By MBstone Biotech Flagship Limited

Form 4 holding Chief Executive Officer, Director, 10%+ Owner

Polaryx Therapeutics, Inc.

Security class: Common Stock
Shares / value: 108,282
Estimated value: $316,183
Report date: 29 Jan 2026
Price: $2.92
Ownership: By Mstone Pediaorphan Singapore I Pte. Limited

Transaction history for Alex Keun Mo Yang in Polaryx Therapeutics, Inc.

Sym	Class	Transaction	%	SEC-reported value	SEC-reported price	Shares	Shares after	Date	Ownership

^* marks a reported price that did not pass the local price check.

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