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Epizyme 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 EPZM?
Owner Type	Number of Shares	Ownership Percentage
Public Companies	0	0%
Individual Insiders	702,967	0.418%
General Public	20,864,694	12.4%
Private Companies	31,854,953	18.9%
Institutions	114,942,138	68.3%

Dilution of Shares: Shareholders have been substantially diluted in the past year, with total shares outstanding growing by 64.7%.

Top Shareholders

Top 25 shareholders own 80.43% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
18.9%	RP Management LLC	31,833,334	US$46.8m	0%	no data
9.26%	PRIMECAP Management Company	15,598,934	US$22.9m	0.49%	0.02%
6.4%	BlackRock, Inc.	10,778,038	US$15.8m	41.5%	no data
4.43%	The Vanguard Group, Inc.	7,450,156	US$11.0m	24.5%	no data
4.32%	Rock Springs Capital Management LP	7,267,696	US$10.7m	90.9%	0.29%
4.02%	Palo Alto Investors LP	6,774,541	US$10.0m	23.5%	0.76%
3.92%	Platinum Investment Management Limited	6,603,870	US$9.7m	134%	0.24%
3.69%	Millennium Management LLC	6,219,821	US$9.1m	218%	0.01%
3.35%	Goldman Sachs Group, Investment Banking and Securities Investments	5,648,034	US$8.3m	81.3%	0.01%
2.72%	Bank of America Corporation, Asset Management Arm	4,586,757	US$6.7m	55.2%	no data
2.5%	Citadel Advisors LLC	4,204,066	US$6.2m	442%	0.01%
2.03%	Mpm Oncology Impact Management, L.P.	3,425,202	US$5.0m	0%	1.26%
2.01%	Bay City Capital LLC	3,380,951	US$5.0m	0%	2.89%
1.73%	State Street Global Advisors, Inc.	2,916,434	US$4.3m	58.5%	no data
1.56%	FMR LLC	2,623,478	US$3.9m	203%	no data
1.5%	Point72 Asset Management, L.P.	2,522,041	US$3.7m	1,140%	0.01%
1.42%	Geode Capital Management, LLC	2,383,960	US$3.5m	43.7%	no data
1.38%	D. E. Shaw & Co., L.P.	2,320,698	US$3.4m	794%	0.01%
1.15%	IndexIQ Advisors LLC	1,935,816	US$2.8m	0%	0.09%
0.89%	Woodline Partners LP	1,500,000	US$2.2m	0%	0.04%
0.82%	Northern Trust Global Investments	1,374,522	US$2.0m	44.9%	no data
0.66%	Two Sigma Investments, LP	1,115,516	US$1.6m	9.08%	0.01%
0.61%	Charles Schwab Investment Management, Inc.	1,021,113	US$1.5m	0%	no data
0.59%	Baker Bros. Advisors LP	1,000,000	US$1.5m	0%	0.01%
0.55%	GSA Capital Partners LLP	930,718	US$1.4m	98.9%	0.19%