30% off. Use code SUMMERSALE30 at checkout for 30% off for 12 months on Plus, Pro and Premium subscriptions. Subscribe now
United States Food & Tobacco

Martek Biosciences Corp (MATK)

Track

Stock chart
Ticker: MATK Exchange: NSQ
Preparing chart...
Download chart Copy chart image Copy link Share to X Share


Subscribe to get access to the transaction volume chart and in-chart transaction details
• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings
Top insiders
Trades
Royal DSM N.V.
1 purchase — total 7,727,013 USD
Buy 24 Feb 2011
Value US$864,229.12 | Price 23.14 | Shares 53,780
Buy 23 Feb 2011
Value US$1,655,345.61 | Price 230.03 | Shares 61,572
Buy 22 Feb 2011
Value US$494,957,799.00 | Price 31.50 | Shares 15,712,946
Buy 22 Feb 2011
Value US$1,008.00 | Price 31.50 | Shares 32
Buy 7 Jul 2010
Value US$41,925.80 | Price 20.96 | Shares 2,000
Sale 23 Sep 2009
Value US$116,786.60 | Price 23.80 | Shares 4,907
Sale 18 Jun 2008
Value US$268,852.80 | Price 33.61 | Shares 8,000
Sale 21 Dec 2007
Value US$11,840.88 | Price 28.74 | Shares 412
Sale 21 Dec 2007
Value US$2,528.24 | Price 28.73 | Shares 88
Sale 18 Dec 2007
Value US$1,124,900.00 | Price 28.12 | Shares 40,000
Buy 18 Dec 2007
Value US$28,150.40 | Price 28.15 | Shares 1,000
Buy 5 Apr 2007
Value US$21,580.00 | Price 21.58 | Shares 1,000
Buy 4 Apr 2007
Value US$82,000.17 | Price 21.22 | Shares 3,864
Buy 4 Apr 2007
Value US$21,149.90 | Price 21.15 | Shares 1,000
Buy 30 Mar 2007
Value US$50,698.00 | Price 20.28 | Shares 2,500
Buy 12 Sep 2006
Value US$53,700.00 | Price 21.48 | Shares 2,500
Buy 11 Sep 2006
Value US$82,763.60 | Price 20.69 | Shares 4,000
Buy 11 Sep 2006
Value US$52,100.00 | Price 20.84 | Shares 2,500
Sale 21 Jun 2006
Value US$143,403.00 | Price 28.68 | Shares 5,000
Sale 9 Mar 2006
Value US$117,567.10 | Price 33.59 | Shares 3,500
Buy 3 Feb 2006
Value US$6,454.24 | Price 27.82 | Shares 232
Buy 3 Feb 2006
Value US$21,350.40 | Price 27.80 | Shares 768
Sale 14 Sep 2005
Value US$1,268,973.00 | Price 42.30 | Shares 30,000
Sale 13 Sep 2005
Value US$3,097,310.40 | Price 43.02 | Shares 72,000
Sale 12 Sep 2005
Value US$7,014,884.00 | Price 44.40 | Shares 158,000
Sale 12 Sep 2005
Value US$898,610.00 | Price 44.93 | Shares 20,000
Sale 21 Jun 2005
Value US$95,815.64 | Price 36.84 | Shares 2,601
Sale 6 Apr 2005
Value US$912,250.50 | Price 60.82 | Shares 15,000
Sale 9 Feb 2005
Value US$2,229,556.00 | Price 63.70 | Shares 35,000
Buy 26 Jan 2005
Value US$451,720.00 | Price 49.10 | Shares 9,200
Buy 21 Jan 2005
Value US$1,867,955.80 | Price 51.62 | Shares 36,188
Buy 23 Dec 2004
Value US$99,240.00 | Price 49.62 | Shares 2,000
Buy 17 Dec 2004
Value US$7,416.00 | Price 49.44 | Shares 150
Buy 17 Dec 2004
Value US$4,943.00 | Price 49.43 | Shares 100
Sale 8 Oct 2004
Value US$1,215,682.50 | Price 48.63 | Shares 25,000
Sale 27 Sep 2004
Value US$703,745.55 | Price 52.13 | Shares 13,500
Sale 27 Sep 2004
Value US$1,042,586.00 | Price 52.13 | Shares 20,000
Sale 24 Sep 2004
Value US$230,206.62 | Price 54.81 | Shares 4,200
Sale 24 Sep 2004
Value US$548,111.00 | Price 54.81 | Shares 10,000
Sale 15 Sep 2004
Value US$1,100,800.00 | Price 55.04 | Shares 20,000
Sale 15 Sep 2004
Value US$160,312.00 | Price 55.28 | Shares 2,900
Sale 16 Jan 2004
Value US$9,661,075.20 | Price 65.86 | Shares 146,700
Sale 16 Jan 2004
Value US$6,572,428.80 | Price 65.86 | Shares 99,800
Sale 15 Jan 2004
Value US$9,864,525.00 | Price 65.76 | Shares 150,000
Sale 12 Jan 2004
Value US$1,503,264.37 | Price 66.22 | Shares 22,700
Sale 9 Jan 2004
Value US$157,697.00 | Price 63.08 | Shares 2,500
Sale 8 Jan 2004
Value US$638,350.00 | Price 63.84 | Shares 10,000
Sale 8 Jan 2004
Value US$160,231.25 | Price 64.09 | Shares 2,500
Sale 8 Jan 2004
Value US$160,231.25 | Price 64.09 | Shares 2,500
Sale 8 Jan 2004
Value US$1,917,684.00 | Price 63.92 | Shares 30,000
Sale 7 Jan 2004
Value US$1,929,411.00 | Price 64.31 | Shares 30,000
Sale 5 Jan 2004
Value US$224,604.00 | Price 66.06 | Shares 3,400
Sale 2 Jan 2004
Value US$257,634.00 | Price 66.06 | Shares 3,900
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2011-02-24 2011-02-24 B Purchase Royal DSM N.V. Large shareholder
53,780 +1.7%
23.14
US$864,229 		53,780 +1.7% 23.14 US$864,229
2011-02-24 2011-02-23 B Purchase Royal DSM N.V. Large shareholder
61,572 -42.0%
230.03
US$1,655,346 		61,572 -42.0% 230.03 US$1,655,346
2011-03-01 2011-02-22 B Purchase Royal DSM N.V. Large shareholder
86,356 +32.1%
258.38
US$1,065,759 		86,356 +32.1% 258.38 US$1,065,759
2011-02-24 2011-02-22 B Purchase Royal DSM N.V. Large shareholder
32 +0.0%
31.50
US$1,008 		32 +0.0% 31.50 US$1,008
2010-07-07 2010-07-07 B Purchase DUBIN STEVE

Chief Executive Officer

Executive Director
2,000 +6.6%
20.96
US$41,926 		2,000 +6.6% 20.96 US$41,926
2010-01-19 2009-09-23 S Sale MACMASTER JR DOUGLAS J Non-Executive Director
4,907 -22.2%
23.80
US$116,787 		4,907 -22.2% 23.80 US$116,787
2008-06-18 2008-06-18 S Sale MACMASTER JR DOUGLAS J Non-Executive Director
8,000 -28.5%
33.61
US$268,853 		8,000 -28.5% 33.61 US$268,853
2008-01-14 2007-12-21 S Sale BEERY JAMES Non-Executive Director
412 -100.0%
28.74
US$11,841 		412 -100.0% 28.74 US$11,841
2008-01-14 2007-12-21 S Sale BEERY JAMES Non-Executive Director
88 -17.6%
28.73
US$2,528 		88 -17.6% 28.73 US$2,528
2007-12-18 2007-12-18 S Sale BUZY PETER L

CFO, Treasurer and Exec VP

Officer
40,000 -80.0%
28.12
US$1,124,900 		40,000 -80.0% 28.12 US$1,124,900
2007-12-18 2007-12-18 B Purchase DUBIN STEVE

Chief Executive Officer

Executive Director
1,000 +6.0%
28.15
US$28,150 		1,000 +6.0% 28.15 US$28,150
2007-04-05 2007-04-05 B Purchase ABRAMSON DAVID M

President

Officer
1,000 +400.0%
21.58
US$21,580 		1,000 +400.0% 21.58 US$21,580
2007-04-05 2007-04-04 B Purchase BUZY PETER L

CFO, Treasurer and Exec VP

Officer
3,864 +inf%
21.22
US$82,000 		3,864 +inf% 21.22 US$82,000
2007-04-04 2007-04-04 B Purchase Nitze Peter A

Chief Operating Officer&ExecVP

Officer
1,000 +inf%
21.15
US$21,150 		1,000 +inf% 21.15 US$21,150
2007-03-30 2007-03-30 B Purchase DUBIN STEVE

Chief Executive Officer

Executive Director
2,500 +17.6%
20.28
US$50,698 		2,500 +17.6% 20.28 US$50,698
2006-09-12 2006-09-12 B Purchase FLANAGAN ROBERT J Non-Executive Director
2,500 +33.3%
21.48
US$53,700 		2,500 +33.3% 21.48 US$53,700
2006-09-11 2006-09-11 B Purchase DUBIN STEVE

President & CEO

Executive Director
4,000 +39.2%
20.69
US$82,764 		4,000 +39.2% 20.69 US$82,764
2006-09-11 2006-09-11 B Purchase FLANAGAN ROBERT J Non-Executive Director
2,500 +50.0%
20.84
US$52,100 		2,500 +50.0% 20.84 US$52,100
2006-06-21 2006-06-21 S Sale MAHAR JOHN H Non-Executive Director
5,000 -100.0%
28.68
US$143,403 		5,000 -100.0% 28.68 US$143,403
2006-03-10 2006-03-09 S Sale MAHAR JOHN H Non-Executive Director
3,500 -100.0%
33.59
US$117,567 		3,500 -100.0% 33.59 US$117,567
2006-02-15 2006-02-03 B Purchase KAWALEK POLLY B Non-Executive Director
232 +30.2%
27.82
US$6,454 		232 +30.2% 27.82 US$6,454
2006-02-15 2006-02-03 B Purchase KAWALEK POLLY B Non-Executive Director
768 +inf%
27.80
US$21,350 		768 +inf% 27.80 US$21,350
2005-09-15 2005-09-14 S Sale PANEM SANDRA PHD Non-Executive Director
30,000 -55.3%
42.30
US$1,268,973 		30,000 -55.3% 42.30 US$1,268,973
2005-09-14 2005-09-13 S Sale KELLER JEROME C

Sr VP Sales & Marketing

Officer
72,000 -96.0%
43.02
US$3,097,310 		72,000 -96.0% 43.02 US$3,097,310
2005-09-14 2005-09-12 S Sale KELLER JEROME C

Sr VP Sales & Marketing

Officer
158,000 -98.1%
44.40
US$7,014,884 		158,000 -98.1% 44.40 US$7,014,884
2005-09-14 2005-09-12 S Sale RADMER RICHARD J Non-Executive Director
20,000 -57.1%
44.93
US$898,610 		20,000 -57.1% 44.93 US$898,610
2005-06-22 2005-06-21 S Sale PANEM SANDRA PHD Non-Executive Director
2,601 -8.9%
36.84
US$95,816 		2,601 -8.9% 36.84 US$95,816
2005-04-07 2005-04-06 S Sale ROTBERG EUGENE H Non-Executive Director
15,000 -26.4%
60.82
US$912,250 		15,000 -26.4% 60.82 US$912,250
2005-02-10 2005-02-09 S Sale BLAKE JULES PHD Non-Executive Director
35,000 -92.2%
63.70
US$2,229,556 		35,000 -92.2% 63.70 US$2,229,556
2005-01-28 2005-01-26 B Purchase MACKLIN GORDON S Non-Executive Director
9,200 +11.3%
49.10
US$451,720 		9,200 +11.3% 49.10 US$451,720
2005-01-25 2005-01-21 B Purchase PANEM SANDRA PHD Non-Executive Director
36,188 +25.5%
51.62
US$1,867,956 		36,188 +25.5% 51.62 US$1,867,956
2004-12-23 2004-12-23 B Purchase FLANAGAN ROBERT J Non-Executive Director
2,000 +inf%
49.62
US$99,240 		2,000 +inf% 49.62 US$99,240
2004-12-17 2004-12-17 B Purchase ABRAMSON DAVID M

SVP of Business Development

Officer
150 +inf%
49.44
US$7,416 		150 +inf% 49.44 US$7,416
2004-12-17 2004-12-17 B Purchase ABRAMSON DAVID M

SVP of Business Development

Officer
100 +inf%
49.43
US$4,943 		100 +inf% 49.43 US$4,943
2004-10-12 2004-10-08 S Sale BARKER GEORGE P

Senior Vice President, Counsel
25,000 -100.0%
48.63
US$1,215,682 		25,000 -100.0% 48.63 US$1,215,682
2004-09-28 2004-09-27 S Sale MACMASTER JR DOUGLAS J Non-Executive Director
13,500 -100.0%
52.13
US$703,746 		13,500 -100.0% 52.13 US$703,746
2004-09-28 2004-09-27 S Sale JOHNSON ANN L Non-Executive Director
20,000 -100.0%
52.13
US$1,042,586 		20,000 -100.0% 52.13 US$1,042,586
2004-10-06 2004-09-24 S Sale
RADMER RICHARD J
4,200 -100.0%
54.81
US$230,207 		4,200 -100.0% 54.81 US$230,207
2004-10-06 2004-09-24 S Sale
RADMER RICHARD J
10,000 -100.0%
54.81
US$548,111 		10,000 -100.0% 54.81 US$548,111
2004-09-17 2004-09-15 S Sale FLATT JAMES H

Sr. VP Research & Development

Officer
20,000 -100.0%
55.04
US$1,100,800 		20,000 -100.0% 55.04 US$1,100,800
2004-09-17 2004-09-15 S Sale ROTBERG EUGENE H Non-Executive Director
2,900 -58.0%
55.28
US$160,312 		2,900 -58.0% 55.28 US$160,312
2004-01-21 2004-01-16 S Sale LINSERT HENRY JR

Chief Executive Officer

Officer
146,700 -100.0%
65.86
US$9,661,075 		146,700 -100.0% 65.86 US$9,661,075
2004-01-21 2004-01-16 S Sale FISHER THOMAS C

Senior VP Operations

Officer
99,800 -100.0%
65.86
US$6,572,429 		99,800 -100.0% 65.86 US$6,572,429
2004-01-21 2004-01-15 S Sale LINSERT HENRY JR

Chief Executive Officer

Officer
150,000 -43.4%
65.76
US$9,864,525 		150,000 -43.4% 65.76 US$9,864,525
2004-01-13 2004-01-12 S Sale LINSERT HENRY JR

Chief Executive Officer

Officer
22,700 -10.4%
66.22
US$1,503,264 		22,700 -10.4% 66.22 US$1,503,264
2004-01-13 2004-01-09 S Sale MAHAR JOHN H Non-Executive Director
2,500 -100.0%
63.08
US$157,697 		2,500 -100.0% 63.08 US$157,697
2004-01-12 2004-01-08 S Sale BLAKE JULES PHD Non-Executive Director
10,000 -77.2%
63.84
US$638,350 		10,000 -77.2% 63.84 US$638,350
2004-01-12 2004-01-08 S Sale MACMASTER JR DOUGLAS J Non-Executive Director
2,500 -30.2%
64.09
US$160,231 		2,500 -30.2% 64.09 US$160,231
2004-01-12 2004-01-08 S Sale MACMASTER JR DOUGLAS J Non-Executive Director
2,500 -100.0%
64.09
US$160,231 		2,500 -100.0% 64.09 US$160,231
2004-01-12 2004-01-08 S Sale KELLER JEROME C

Senior VP Sale & Marketing

Officer
30,000 -90.9%
63.92
US$1,917,684 		30,000 -90.9% 63.92 US$1,917,684
2004-01-09 2004-01-07 S Sale FISHER THOMAS C

Senior VP Operations

Officer
30,000 -35.9%
64.31
US$1,929,411 		30,000 -35.9% 64.31 US$1,929,411
2004-01-07 2004-01-05 S Sale LINSERT HENRY JR

Chief Executive Officer

Officer
3,400 -1.5%
66.06
US$224,604 		3,400 -1.5% 66.06 US$224,604
2004-01-06 2004-01-02 S Sale LINSERT HENRY JR

Chief Executive Officer

Officer
3,900 -1.7%
66.06
US$257,634 		3,900 -1.7% 66.06 US$257,634
Explore more

More insider trading research around Martek Biosciences Corp

More insider trades in United States
Similar Consumer Non-Cyclicals companies with insider activity
More Food & Beverages companies with insider activity
More Food & Tobacco companies with insider activity
Insider trading in North America