Over the past year, PLYX insiders bought $367,994 of stock (91.32K shares) on the open market and sold none.
A count shows 2 insiders buying PLYX stock on the open market over the past 12 months and none selling.
Among Polaryx Therapeutics' insiders, Alex Keun Mo Yang (Chief Executive Officer) was the largest open-market buyer over the past 12 months, purchasing $360,004 of stock (88.45K shares), most recently on May 27, 2026.
According to Business Quant data, insiders at Polaryx Therapeutics reported 24.46Mn shares in total in their latest Form 4 filings, unchanged from 24.46Mn shares at the end of Q2 2026.
Of the 24.46Mn shares held by Polaryx Therapeutics insiders, 228.22K shares (0.93%) are held directly and 24.23Mn shares (99.07%) indirectly, through trusts, partnerships, family members and other entities.
The insider holdings in Polaryx Therapeutics belong to 2 insiders who have reported on Form 4 within the past two years.
PLYX's two largest insider shareholders, per their latest Form 4 filings, are Alex Keun Mo Yang (Chief Executive Officer, 24.23Mn shares) and G. Michael Landis (Chief Financial Officer, 228.22K shares).
The largest insider, Alex Keun Mo Yang, holds 99.07% of PLYX's insider total.
Institutions owned 4.40% of PLYX shares as of Q2 2026; insiders' latest Form 4 filings account for about 49.07%, leaving roughly 46.53% with other investors, including the public.
In the past year, 2 insiders of Polaryx Therapeutics submitted 2 Form 4 filings reporting trades, awards or other transactions.
The insider holdings and trades above for Polaryx Therapeutics reflect Form 4 filings through May 28, 2026.
Form 4 Holdings
Insiders Holding PLYX
Insiders2
Shares held24.46Mn
Of outstanding49.07%
#
Insider
Position
Direct
Indirect
Total
Share of Insiders
Last Filed
1
Alex Keun Mo Yang
Chief Executive Officer
0
24,233,249
24,233,249
99.1%
28 May, 2026
2
G. Michael Landis
Chief Financial Officer
228,225
0
228,225
0.9%
20 Feb, 2026
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.