Home
Latest Filings
Latest Buys
Latest Sells
Institutions
Derivatives
Hot Buys
Data Screener
Email Alerts
Insider Charts
MATK
- As of 06/16/24, 01:14:15 AM: 41 Insider Transactions.
Sector:
Industry:
Prev Close:
$31.49
Avg Vol(3m):
1,068,340
P/E:
0.00
EPS:
0.00
Email this page to a friend.
Insider Transactions for MATK
Buy/Sell*
Filed Date
Subject
Symbol
Acquirer
Pct Owned
Details
B
2013-02-11 17:07:23.0
MARTEK BIOSCIENCES CORP
MATK
DIMENSIONAL FUND ADVISORS LP
0.0%
view
B
2011-02-28 14:55:57.0
MARTEK BIOSCIENCES CORP
MATK
Royal DSM N
8.95%
view
S
2011-02-11 14:06:08.0
MARTEK BIOSCIENCES CORP
MATK
DIMENSIONAL FUND ADVISORS LP
4.99%
view
S
2011-02-07 09:07:02.0
MARTEK BIOSCIENCES CORP
MATK
BlackRock Inc
n/a
view
B
2010-02-09 16:00:22.0
MARTEK BIOSCIENCES CORP
MATK
VANGUARD GROUP INC
5.32%
view
B
2009-02-17 07:01:41.0
MARTEK BIOSCIENCES CORP
MATK
STATE STREET BANK & TRUST CO
7.69%
view
S
2008-02-13 12:34:34.0
MARTEK BIOSCIENCES CORP
MATK
CAPITAL RESEARCH & MANAGEMENT CO
0.0%
view
B
2008-02-05 17:28:54.0
MARTEK BIOSCIENCES CORP
MATK
LORD ABBETT & CO LLC
5.6%
view
S
2007-02-13 10:32:46.0
MARTEK BIOSCIENCES CORP
MATK
CAPITAL RESEARCH & MANAGEMENT CO
7.8%
view
S
2007-02-09 06:57:10.0
MARTEK BIOSCIENCES CORP
MATK
FMR CORP
n/a
view
B
2006-02-14 00:00:00.0
MARTEK BIOSCIENCES CORP
MATK
CAPITAL RESEARCH & MANAGEMENT CO
12.5%
view
B
2006-02-01 00:00:00.0
MARTEK BIOSCIENCES CORP
MATK
FMR CORP
n/a
view
B
2005-09-09 00:00:00.0
MARTEK BIOSCIENCES CORP
MATK
WADDELL & REED FINANCIAL INC
6.1%
view
S
2004-04-26 00:00:00.0
MARTEK BIOSCIENCES CORP
MATK
ESSEX INVESTMENT MANAGEMENT CO LLC
8.02%
view
S
2004-02-18 00:00:00.0
MARTEK BIOSCIENCES CORP
MATK
EASTBOURNE CAPITAL MANAGEMENT LLC
12.0%
view
B
2004-02-10 00:00:00.0
MARTEK BIOSCIENCES CORP
MATK
ESSEX INVESTMENT MANAGEMENT CO LLC
8.02%
view
S
2004-01-21 00:00:00.0
MARTEK BIOSCIENCES CORP
MATK
EASTBOURNE CAPITAL MANAGEMENT LLC
14.86%
view
S
2003-04-09 00:00:00.0
MARTEK BIOSCIENCES CORP
MATK
COLLEGE RETIREMENT EQUITIES FUND
5.867%
view
S
2003-02-14 00:00:00.0
MARTEK BIOSCIENCES CORP
MATK
EASTBOURNE CAPITAL MANAGEMENT LLC
16.1%
view
S
2003-02-12 00:00:00.0
MARTEK BIOSCIENCES CORP
MATK
HAYWOOD GEORGE WEAVER
5.4%
view
B
2003-01-14 00:00:00.0
MARTEK BIOSCIENCES CORP
MATK
EASTBOURNE CAPITAL MANAGEMENT LLC
16.3%
view
S
2002-02-14 00:00:00.0
MARTEK BIOSCIENCES CORP
MATK
MASSACHUSETTS FINANCIAL SERVICES CO
3.8%
view
S
2002-02-11 00:00:00.0
MARTEK BIOSCIENCES CORP
MATK
BANK OF AMERICA CORP
5.0%
view
S
2002-02-08 00:00:00.0
MARTEK BIOSCIENCES CORP
MATK
STATE OF WISCONSIN INVESTMENT BOARD
4.03%
view
B
2002-02-01 00:00:00.0
MARTEK BIOSCIENCES CORP
MATK
EASTBOURNE CAPITAL MANAGEMENT LLC
8.1%
view
S
2001-02-14 00:00:00.0
MARTEK BIOSCIENCES CORP
MATK
HAYWOOD GEORGE WEAVER
6.7%
view
S
2001-02-13 00:00:00.0
MARTEK BIOSCIENCES CORP
MATK
COLLEGE RETIREMENT EQUITIES FUND
7.29%
view
S
2001-02-12 00:00:00.0
MARTEK BIOSCIENCES CORP
MATK
MASSACHUSETTS FINANCIAL SERVICES CO
12.51%
view
B
2001-02-02 00:00:00.0
MARTEK BIOSCIENCES CORP
MATK
H&Q HEALTHCARE INVESTORS
1.0%
view
B
2000-02-15 00:00:00.0
MARTEK BIOSCIENCES CORP
MATK
BANK OF AMERICA CORP
8.0%
view
B
2000-02-11 00:00:00.0
MARTEK BIOSCIENCES CORP
MATK
COLLEGE RETIREMENT EQUITIES FUND
13.4%
view
B
2000-01-26 00:00:00.0
MARTEK BIOSCIENCES CORP
MATK
EASTBOURNE CAPITAL MANAGEMENT LLC
6.1%
view
B
1999-06-09 00:00:00.0
MARTEK BIOSCIENCES CORP
MATK
HAYWOOD GEORGE WEAVER
11.06%
view
S
1999-02-12 00:00:00.0
MARTEK BIOSCIENCES CORP
MATK
COLLEGE RETIREMENT EQUITIES FUND
8.807%
view
B
1999-02-02 00:00:00.0
MARTEK BIOSCIENCES CORP
MATK
STATE OF WISCONSIN INVESTMENT BOARD
10.12%
view
B
1998-02-18 00:00:00.0
MARTEK BIOSCIENCES CORP
MATK
NATIONSBANK CORP
9.249%
view
S
1998-02-10 00:00:00.0
MARTEK BIOSCIENCES CORP
MATK
PUTNAM INVESTMENTS INC
12.0%
view
S
1998-01-26 00:00:00.0
MARTEK BIOSCIENCES CORP
MATK
STATE OF WISCONSIN INVESTMENT BOARD
12.0%
view
S
1997-05-15 00:00:00.0
MARTEK BIOSCIENCES CORP
MATK
H&Q HEALTHCARE INVESTORS
7.51%
view
B
1997-01-30 00:00:00.0
MARTEK BIOSCIENCES CORP
MATK
PUTNAM INVESTMENTS INC
12.0%
view
S
1996-02-07 00:00:00.0
MARTEK BIOSCIENCES CORP
MATK
COLLEGE RETIREMENT EQUITIES FUND
4.69%
view
* Institutions do not report transaction buy/sell types directly. To help members better understand the transactions, this column is filled by InsiderCow's best-effort interpretations.