Top shareholders according to the share registration book closing on 30 December 2019 are as follows:

No. Major Shareholders # Shares % Shares
1. Mrs. Charuwan Vanasin/3 94,436,262 11.122
2. Ramkhamhaeng Hospital PCL. 85,344,500 10.051
3. WJ International Hospital Management Co., Ltd./1 /3 60,000,000 7.066
4. Mr. Amnuay Unnanuntana, MD 43,510,970 5.124
5. Mrs. Nawara Vanasin/3 21,912,663 2.581
6. Global Health Investment Co., Ltd/2 /3 21,413,340 2.522
7. Khunying Songseang Meksawan 20,046,582 2.361
8. Dr. Aurchart Kanjanapitak 18,259,500 2.151
9. Thai NVDR Company Limited 16,085,236 1.894
10. Dr. Arsa Meksawan 9,695,255 1.142
11. Mr. Sita Meksawan 8,415,063 0.991
12. Mr. Aasis Unnanuntana, MD 6,811,300 0.805
13. Mr. Boon Vanasin, MD/3 5,801,848 0.683
  Total 411,732,519 48.493

Noted:
1/ WJ International Hospital Management Co. , Ltd. Shareholders by Dr.Boon Vanasin 30% and Mrs.Charuwan Vanasin located at Hongkong.
2/ Global Health Investment Co., Ltd the company under to control by Vanasin's family that the major shareholders of the company located at Hongkong.
3/ The major shareholders are Dr. Boon Vanasin group, consist of Dr. Boon Vanasin, Mrs. Charuwan Vanasin, Mrs. Nawara Vanasin, Ms. Nalin Vanasin ( 10,837 shares) Mr. Jon Vanasin ( 10,837 shares) , WJ International Hospital Management Co., Ltd. and Global Health Investment Co., Ltd. Total 23.974 %