ChipMOS TECHNOLOGIES Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

Insider Trading Volume

Insider Buying: Insufficient data to determine if insiders have bought more shares than they have sold in the past 3 months.

Ownership Breakdown

What is the ownership structure of IMOS?
Owner Type	Number of Shares	Ownership Percentage
Individual Insiders	14,837,949	2.04%
Private Companies	42,850,000	5.89%
Public Companies	78,910,390	10.9%
Institutions	153,095,234	21.1%
General Public	437,546,553	60.2%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 37.54% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
10.9%	ASE Technology Holding Co., Ltd.	78,910,390	US$114.0m	0%	no data
5.67%	Yann Yuan Investment Co., Ltd.	41,200,000	US$59.5m	0%	no data
3.41%	Renaissance Technologies LLC	24,803,820	US$35.8m	-0.51%	0.05%
3.2%	The Vanguard Group, Inc.	23,291,788	US$33.6m	-2.06%	no data
2.33%	Dimensional Fund Advisors LP	16,923,049	US$24.4m	1.21%	no data
1.82%	BlackRock, Inc.	13,264,178	US$19.2m	2.7%	no data
1.7%	Shih-Jye Cheng	12,394,938	US$17.9m	0%	no data
1.54%	Acadian Asset Management LLC	11,182,809	US$16.2m	0.36%	0.04%
1.49%	Norges Bank Investment Management	10,801,840	US$15.6m	0%	no data
0.89%	New Labor Pension Scheme	6,459,056	US$9.3m	0%	0.05%
0.89%	Ensign Peak Advisors, Inc.	6,450,347	US$9.3m	0%	0.02%
0.53%	BNY Mellon Asset Management	3,867,621	US$5.6m	-7.82%	no data
0.44%	Herald Investment Management Ltd.	3,198,770	US$4.6m	-3.08%	0.29%
0.39%	Teachers Insurance and Annuity Association-College Retirement Equities Fund	2,810,000	US$4.1m	-31.8%	no data
0.31%	O'Shaughnessy Asset Management, LLC	2,260,940	US$3.3m	-20.8%	0.04%
0.3%	The Renaissance Group LLC	2,190,980	US$3.2m	4.11%	0.12%
0.3%	Arrowstreet Capital, Limited Partnership	2,185,400	US$3.2m	0%	no data
0.28%	Australian Super Pty Ltd	2,020,000	US$2.9m	0%	no data
0.25%	State Street Global Advisors, Inc.	1,819,875	US$2.6m	5.14%	no data
0.25%	Mega International Investment Trust Co., Ltd.	1,782,608	US$2.6m	-5.84%	0.21%
0.16%	Envestnet Asset Management, Inc.	1,132,940	US$1.6m	14.2%	no data
0.15%	Capital Investment Trust Corporation	1,063,068	US$1.5m	-1.51%	0.03%
0.14%	RAM Active Investments S.A.	1,054,183	US$1.5m	0%	0.15%
0.13%	Verdad Advisers, L.P.	956,000	US$1.4m	-4.4%	2.81%
0.13%	Vanguard Personalized Indexing Management	951,820	US$1.4m	-13.6%	0.03%