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Chembio Diagnostics Inc (CEMI)

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Ticker: CEMI Exchange: NAS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings
Top insiders
Trades
Perceptive Credit Advisors, LLC
1 purchase — total 60,184 USD
Buy 25 Apr 2023
Value US$3,290,346.64 | Price 201.62 | Shares 26,965
Buy 24 Apr 2023
Value US$918,083.29 | Price 42.20 | Shares 64,821
Buy 21 Apr 2023
Value US$31,449.60 | Price 0.45 | Shares 70,200
Buy 20 Apr 2023
Value US$25,200.00 | Price 0.45 | Shares 56,000
Buy 19 Apr 2023
Value US$61,376.00 | Price 0.45 | Shares 137,000
Buy 18 Apr 2023
Value US$7,078.40 | Price 0.45 | Shares 15,800
Buy 17 Apr 2023
Value US$2,160.00 | Price 0.45 | Shares 4,800
Buy 14 Apr 2023
Value US$5,175.00 | Price 0.45 | Shares 11,500
Buy 13 Apr 2023
Value US$63,060.30 | Price 0.45 | Shares 140,134
Buy 11 Apr 2023
Value US$56,760.00 | Price 0.44 | Shares 129,000
Buy 6 Apr 2023
Value US$149,160.00 | Price 0.44 | Shares 339,000
Buy 5 Apr 2023
Value US$97,875.00 | Price 0.45 | Shares 217,500
Buy 4 Apr 2023
Value US$86,212.72 | Price 0.44 | Shares 195,938
Buy 11 Nov 2019
Value US$44,400.00 | Price 4.44 | Shares 10,000
Sale 24 May 2019
Value US$67,726.65 | Price 6.95 | Shares 9,744
Sale 23 May 2019
Value US$92,582.28 | Price 7.15 | Shares 12,956
Sale 22 May 2019
Value US$54,125.12 | Price 7.41 | Shares 7,300
Buy 14 Nov 2018
Value US$87,150.00 | Price 5.81 | Shares 15,000
Buy 14 Nov 2018
Value US$29,000.00 | Price 5.80 | Shares 5,000
Buy 5 Nov 2018
Value US$101,250.00 | Price 6.75 | Shares 15,000
Buy 13 Feb 2018
Value US$100,001.25 | Price 6.75 | Shares 14,815
Buy 28 Jun 2017
Value US$35,983.12 | Price 5.76 | Shares 6,250
Buy 11 Oct 2016
Value US$21,480.00 | Price 7.16 | Shares 3,000
Buy 16 Aug 2016
Value US$141,210.00 | Price 5.23 | Shares 27,000
Sale 15 Jun 2016
Value US$25,200.00 | Price 8.40 | Shares 3,000
Sale 1 Jun 2016
Value US$102,720.00 | Price 8.56 | Shares 12,000
Sale 31 May 2016
Value US$111,670.00 | Price 8.59 | Shares 13,000
Sale 29 May 2015
Value US$90,014.00 | Price 4.50 | Shares 20,000
Buy 19 Nov 2014
Value US$7,754.40 | Price 4.31 | Shares 1,800
Buy 26 Feb 2014
Value US$35,000.00 | Price 3.50 | Shares 10,000
Sale 26 Feb 2014
Value US$35,000.00 | Price 3.50 | Shares 10,000
Sale 6 Dec 2013
Value US$10,200.00 | Price 3.40 | Shares 3,000
Sale 5 Dec 2013
Value US$23,802.80 | Price 3.40 | Shares 7,000
Planned sale 11 Nov 2013
Value US$53,235.00 | Price 3.55 | Shares 15,000
Sale 14 Sep 2012
Value US$13,454.00 | Price 4.34 | Shares 3,100
Sale 13 Sep 2012
Value US$20,553.00 | Price 4.42 | Shares 4,650
Sale 13 Sep 2012
Value US$439.00 | Price 4.39 | Shares 100
Sale 13 Sep 2012
Value US$438.00 | Price 4.38 | Shares 100
Sale 13 Sep 2012
Value US$16,116.75 | Price 4.35 | Shares 3,705
Sale 12 Sep 2012
Value US$439.00 | Price 4.39 | Shares 100
Sale 11 Sep 2012
Value US$4,350.00 | Price 4.35 | Shares 1,000
Sale 10 Sep 2012
Value US$88.80 | Price 4.44 | Shares 20
Sale 10 Sep 2012
Value US$8,800.00 | Price 4.40 | Shares 2,000
Sale 7 Sep 2012
Value US$26,840.00 | Price 4.40 | Shares 6,100
Sale 7 Sep 2012
Value US$44,232.00 | Price 4.42 | Shares 10,000
Buy 9 Dec 2011
Value US$484.00 | Price 0.44 | Shares 1,100
Buy 9 Dec 2011
Value US$8,127.00 | Price 0.43 | Shares 18,900
Sale 8 Dec 2011
Value US$11,976.00 | Price 0.40 | Shares 30,000
Buy 7 Dec 2011
Value US$20,000.00 | Price 0.40 | Shares 50,000
Sale 7 Dec 2011
Value US$20,000.00 | Price 0.40 | Shares 50,000
Buy 5 Dec 2011
Value US$4,170.00 | Price 0.42 | Shares 10,000
Buy 5 Dec 2011
Value US$4,472.32 | Price 0.42 | Shares 10,725
Sale 15 Mar 2011
Value US$16,148.79 | Price 0.39 | Shares 41,018
Sale 14 Mar 2011
Value US$3,724.84 | Price 0.41 | Shares 8,982
Buy 14 Mar 2011
Value US$21,000.00 | Price 0.42 | Shares 50,000
Buy 11 Mar 2011
Value US$6,300.00 | Price 0.42 | Shares 15,000
Buy 15 Dec 2010
Value US$5,250.00 | Price 0.35 | Shares 15,000
Buy 11 Jun 2010
Value US$1,150.00 | Price 0.23 | Shares 5,000
Buy 11 Jun 2010
Value US$1,650.00 | Price 0.22 | Shares 7,500
Buy 12 May 2010
Value US$8,000.00 | Price 0.20 | Shares 40,000
Buy 10 May 2010
Value US$3,043.20 | Price 0.20 | Shares 15,216
Buy 10 May 2010
Value US$4,100.00 | Price 0.21 | Shares 20,000
Buy 25 Aug 2009
Value US$18,000.00 | Price 0.18 | Shares 100,000
Buy 1 Dec 2008
Value US$658.00 | Price 0.14 | Shares 4,700
Buy 20 Nov 2008
Value US$1,652.00 | Price 0.14 | Shares 11,800
Buy 14 Nov 2008
Value US$12,525.00 | Price 0.15 | Shares 83,500
Buy 8 Sep 2008
Value US$17,800.00 | Price 0.18 | Shares 100,000
Buy 19 May 2008
Value US$46,320.00 | Price 0.12 | Shares 386,000
Buy 19 May 2008
Value US$1,150.00 | Price 0.12 | Shares 10,000
Buy 19 May 2008
Value US$440.00 | Price 0.11 | Shares 4,000
Buy 16 May 2008
Value US$600.00 | Price 0.12 | Shares 5,000
Buy 16 May 2008
Value US$12,600.00 | Price 0.11 | Shares 120,000
Buy 16 May 2008
Value US$2,580.00 | Price 0.10 | Shares 25,800
Buy 16 May 2008
Value US$900.00 | Price 0.09 | Shares 10,000
Buy 16 May 2008
Value US$1,700.00 | Price 0.09 | Shares 20,000
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
2023-04-25 2023-04-25 B Purchase
Perceptive Credit Advisors, LLC
Large shareholder
26,965 -10.8%
201.62
US$3,290,347 		26,965 -10.8% 201.62 US$3,290,347
2023-04-25 2023-04-24 B Purchase
Perceptive Credit Advisors, LLC
Large shareholder
64,821 +45.3%
42.20
US$918,083 		64,821 +45.3% 42.20 US$918,083
2023-04-25 2023-04-21 B Purchase
Perceptive Credit Advisors, LLC
Large shareholder
29,328 +30.8%
322.98
US$1,946,012 		29,328 +30.8% 322.98 US$1,946,012
2023-04-20 2023-04-20 B Purchase
Perceptive Credit Advisors, LLC
Large shareholder
56,000 +1.2%
0.45
US$25,200 		56,000 +1.2% 0.45 US$25,200
2023-04-20 2023-04-19 B Purchase
Perceptive Credit Advisors, LLC
Large shareholder
137,000 +2.9%
0.45
US$61,376 		137,000 +2.9% 0.45 US$61,376
2023-04-20 2023-04-18 B Purchase
Perceptive Credit Advisors, LLC
Large shareholder
15,800 +0.3%
0.45
US$7,078 		15,800 +0.3% 0.45 US$7,078
2023-04-17 2023-04-17 B Purchase
Perceptive Credit Advisors, LLC
Large shareholder
4,800 +0.1%
0.45
US$2,160 		4,800 +0.1% 0.45 US$2,160
2023-04-17 2023-04-14 B Purchase
Perceptive Credit Advisors, LLC
Large shareholder
11,500 +0.2%
0.45
US$5,175 		11,500 +0.2% 0.45 US$5,175
2023-04-17 2023-04-13 B Purchase
Perceptive Credit Advisors, LLC
Large shareholder
140,134 +3.1%
0.45
US$63,060 		140,134 +3.1% 0.45 US$63,060
2023-04-13 2023-04-11 B Purchase
Perceptive Credit Advisors, LLC
Large shareholder
129,000 +2.9%
0.44
US$56,760 		129,000 +2.9% 0.44 US$56,760
2023-04-06 2023-04-06 B Purchase
Perceptive Credit Advisors, LLC
Large shareholder
339,000 +8.3%
0.44
US$149,160 		339,000 +8.3% 0.44 US$149,160
2023-04-06 2023-04-05 B Purchase
Perceptive Credit Advisors, LLC
Large shareholder
217,500 +5.6%
0.45
US$97,875 		217,500 +5.6% 0.45 US$97,875
2023-04-06 2023-04-04 B Purchase
Perceptive Credit Advisors, LLC
Large shareholder
195,938 +5.3%
0.44
US$86,213 		195,938 +5.3% 0.44 US$86,213
2019-11-13 2019-11-11 B Purchase Potthoff John Gary
10,000 +36.0%
4.44
US$44,400 		10,000 +36.0% 4.44 US$44,400
2019-05-24 2019-05-24 S Sale
2.6
Esfandiari Javan

See Remarks
9,744 -8.2%
6.95
US$67,727 		9,744 -8.2% 6.95 US$67,727
2019-05-24 2019-05-23 S Sale
2.6
Esfandiari Javan

See Remarks
12,956 -9.9%
7.15
US$92,582 		12,956 -9.9% 7.15 US$92,582
2019-05-24 2019-05-22 S Sale
2.6
Esfandiari Javan

See Remarks
7,300 -5.3%
7.41
US$54,125 		7,300 -5.3% 7.41 US$54,125
2018-11-16 2018-11-14 B Purchase Potthoff John Gary
15,000 +117.4%
5.81
US$87,150 		15,000 +117.4% 5.81 US$87,150
2018-11-16 2018-11-14 B Purchase Potthoff John Gary
5,000 +22.0%
5.80
US$29,000 		5,000 +22.0% 5.80 US$29,000
2018-11-06 2018-11-05 B Purchase Passas Robert

See Remarks
15,000 +inf%
6.75
US$101,250 		15,000 +inf% 6.75 US$101,250
2018-02-13 2018-02-13 B Purchase
Goldman Neil A

EVP & Chief Financial Officer

Officer
14,815 +inf%
6.75
US$100,001 		14,815 +inf% 6.75 US$100,001
2017-06-29 2017-06-28 B Purchase PESSIN NORMAN H
6,250 +0.5%
5.76
US$35,983 		6,250 +0.5% 5.76 US$35,983
2017-06-29 2016-10-11 B Purchase PESSIN NORMAN H
3,000 +0.3%
7.16
US$21,480 		3,000 +0.3% 7.16 US$21,480
2017-06-29 2016-08-16 B Purchase PESSIN NORMAN H
27,000 +2.4%
5.23
US$141,210 		27,000 +2.4% 5.23 US$141,210
2016-06-17 2016-06-15 S Sale
2.7
Klugewicz Sharon W

Chief Operating Officer

Officer
3,000 -30.0%
8.40
US$25,200 		3,000 -30.0% 8.40 US$25,200
2016-06-02 2016-06-01 S Sale
2.6
Esfandiari Javan

Chief Science/Tech Officer

Officer
12,000 -15.2%
8.56
US$102,720 		12,000 -15.2% 8.56 US$102,720
2016-06-02 2016-05-31 S Sale
2.6
Esfandiari Javan

Chief Science/Tech Officer

Officer
13,000 -14.1%
8.59
US$111,670 		13,000 -14.1% 8.59 US$111,670
2015-05-29 2015-05-29 S Sale
2.6
Esfandiari Javan

Chief Science/Technology Offic

Officer
20,000 -17.8%
4.50
US$90,014 		20,000 -17.8% 4.50 US$90,014
2014-11-21 2014-11-19 B Purchase
0.9
KISSINGER PETER
Non-Executive Director
1,800 +inf%
4.31
US$7,754 		1,800 +inf% 4.31 US$7,754
2014-02-28 2014-02-26 B Purchase
2.7
Klugewicz Sharon W

Chief Operating Officer

Officer
10,000 +inf%
3.50
US$35,000 		10,000 +inf% 3.50 US$35,000
2014-02-28 2014-02-26 S Sale
2.8
Larkin Richard J

Chief Financial Officer

Officer
10,000 -32.9%
3.50
US$35,000 		10,000 -32.9% 3.50 US$35,000
2013-12-06 2013-12-06 S Sale
2.6
Esfandiari Javan

Senior Vice President

Officer
3,000 -3.7%
3.40
US$10,200 		3,000 -3.7% 3.40 US$10,200
2013-12-06 2013-12-05 S Sale
2.6
Esfandiari Javan

Senior Vice President

Officer
7,000 -7.9%
3.40
US$23,803 		7,000 -7.9% 3.40 US$23,803
2013-11-12 2013-11-11 PlS Planned sale
4.2
Siebert Lawrence A.

President

Executive Director Large shareholder
15,000 -1.9%
3.55
US$53,235 		15,000 -1.9% 3.55 US$53,235
2012-09-14 2012-09-14 S Sale
4.2
Siebert Lawrence A.

President

Executive Director Large shareholder
3,100 -0.4%
4.34
US$13,454 		3,100 -0.4% 4.34 US$13,454
2012-09-14 2012-09-13 S Sale
4.2
Siebert Lawrence A.

President

Executive Director Large shareholder
4,650 -0.6%
4.42
US$20,553 		4,650 -0.6% 4.42 US$20,553
2012-09-14 2012-09-13 S Sale
4.2
Siebert Lawrence A.

President

Executive Director Large shareholder
100 -0.0%
4.39
US$439 		100 -0.0% 4.39 US$439
2012-09-14 2012-09-13 S Sale
4.2
Siebert Lawrence A.

President

Executive Director Large shareholder
100 -0.0%
4.38
US$438 		100 -0.0% 4.38 US$438
2012-09-14 2012-09-13 S Sale
4.2
Siebert Lawrence A.

President

Executive Director Large shareholder
3,705 -0.5%
4.35
US$16,117 		3,705 -0.5% 4.35 US$16,117
2012-09-14 2012-09-12 S Sale
4.2
Siebert Lawrence A.

President

Executive Director Large shareholder
100 -0.0%
4.39
US$439 		100 -0.0% 4.39 US$439
2012-09-11 2012-09-11 S Sale
4.2
Siebert Lawrence A.

President

Executive Director Large shareholder
1,000 -0.1%
4.35
US$4,350 		1,000 -0.1% 4.35 US$4,350
2012-09-11 2012-09-10 S Sale
4.2
Siebert Lawrence A.

President

Executive Director Large shareholder
20 -0.0%
4.44
US$89 		20 -0.0% 4.44 US$89
2012-09-11 2012-09-10 S Sale
4.2
Siebert Lawrence A.

President

Executive Director Large shareholder
2,000 -0.2%
4.40
US$8,800 		2,000 -0.2% 4.40 US$8,800
2012-09-11 2012-09-07 S Sale
4.2
Siebert Lawrence A.

President

Executive Director Large shareholder
6,100 -0.7%
4.40
US$26,840 		6,100 -0.7% 4.40 US$26,840
2012-09-10 2012-09-07 S Sale
2.6
Esfandiari Javan

Senior Vice President

Officer
10,000 -10.2%
4.42
US$44,232 		10,000 -10.2% 4.42 US$44,232
2011-12-12 2011-12-09 B Purchase
4.2
Siebert Lawrence A.

President

Executive Director Large shareholder
1,100 +0.0%
0.44
US$484 		1,100 +0.0% 0.44 US$484
2011-12-12 2011-12-09 B Purchase
4.2
Siebert Lawrence A.

President

Executive Director Large shareholder
18,900 +0.3%
0.43
US$8,127 		18,900 +0.3% 0.43 US$8,127
2011-12-09 2011-12-08 S Sale
2.6
Esfandiari Javan

Senior Vice President

Officer
30,000 -9.4%
0.40
US$11,976 		30,000 -9.4% 0.40 US$11,976
2011-12-09 2011-12-07 B Purchase
3.9
Meller Gary
Non-Executive Director
50,000 +12.0%
0.40
US$20,000 		50,000 +12.0% 0.40 US$20,000
2011-12-09 2011-12-07 S Sale
2.6
Esfandiari Javan

Senior Vice President

Officer
50,000 -13.6%
0.40
US$20,000 		50,000 -13.6% 0.40 US$20,000
2011-12-07 2011-12-05 B Purchase
4.2
Siebert Lawrence A.

President

Executive Director Large shareholder
10,000 +0.2%
0.42
US$4,170 		10,000 +0.2% 0.42 US$4,170
2011-12-07 2011-12-05 B Purchase
4.2
Siebert Lawrence A.

President

Executive Director Large shareholder
10,725 +0.2%
0.42
US$4,472 		10,725 +0.2% 0.42 US$4,472
2011-03-16 2011-03-15 S Sale
2.6
Esfandiari Javan

Senior Vice President

Officer
41,018 -15.7%
0.39
US$16,149 		41,018 -15.7% 0.39 US$16,149
2011-03-16 2011-03-14 S Sale
2.6
Esfandiari Javan

Senior Vice President

Officer
8,982 -3.3%
0.41
US$3,725 		8,982 -3.3% 0.41 US$3,725
2011-03-15 2011-03-14 B Purchase
4.2
Siebert Lawrence A.

President

Executive Director Large shareholder
50,000 +0.8%
0.42
US$21,000 		50,000 +0.8% 0.42 US$21,000
2011-03-15 2011-03-11 B Purchase
4.2
Siebert Lawrence A.

President

Executive Director Large shareholder
15,000 +0.2%
0.42
US$6,300 		15,000 +0.2% 0.42 US$6,300
2010-12-17 2010-12-15 B Purchase
3.9
Meller Gary
Non-Executive Director
15,000 +3.8%
0.35
US$5,250 		15,000 +3.8% 0.35 US$5,250
2010-06-15 2010-06-11 B Purchase Davis Katherine Lyon Non-Executive Director
5,000 +6.0%
0.23
US$1,150 		5,000 +6.0% 0.23 US$1,150
2010-06-15 2010-06-11 B Purchase Davis Katherine Lyon Non-Executive Director
7,500 +10.0%
0.22
US$1,650 		7,500 +10.0% 0.22 US$1,650
2010-05-14 2010-05-12 B Purchase Davis Katherine Lyon Non-Executive Director
40,000 +113.6%
0.20
US$8,000 		40,000 +113.6% 0.20 US$8,000
2010-05-12 2010-05-10 B Purchase Davis Katherine Lyon Non-Executive Director
15,216 +76.1%
0.20
US$3,043 		15,216 +76.1% 0.20 US$3,043
2010-05-12 2010-05-10 B Purchase Davis Katherine Lyon Non-Executive Director
20,000 +inf%
0.21
US$4,100 		20,000 +inf% 0.21 US$4,100
2009-08-26 2009-08-25 B Purchase
3.9
Meller Gary
Non-Executive Director
100,000 +51.2%
0.18
US$18,000 		100,000 +51.2% 0.18 US$18,000
2009-10-30 2008-12-01 B Purchase
3.9
Meller Gary
Non-Executive Director
4,700 +1.6%
0.14
US$658 		4,700 +1.6% 0.14 US$658
2008-11-24 2008-11-20 B Purchase
3.9
Meller Gary
Non-Executive Director
11,800 +6.4%
0.14
US$1,652 		11,800 +6.4% 0.14 US$1,652
2008-11-18 2008-11-14 B Purchase
3.9
Meller Gary
Non-Executive Director
83,500 +83.5%
0.15
US$12,525 		83,500 +83.5% 0.15 US$12,525
2008-09-09 2008-09-08 B Purchase
4.2
Siebert Lawrence A.

President

Executive Director Large shareholder
100,000 +1.6%
0.18
US$17,800 		100,000 +1.6% 0.18 US$17,800
2008-05-19 2008-05-19 B Purchase
4.2
Siebert Lawrence A.

CEO

Executive Director Large shareholder
386,000 +6.9%
0.12
US$46,320 		386,000 +6.9% 0.12 US$46,320
2008-05-19 2008-05-19 B Purchase
4.2
Siebert Lawrence A.

CEO

Executive Director Large shareholder
10,000 +0.2%
0.12
US$1,150 		10,000 +0.2% 0.12 US$1,150
2008-05-19 2008-05-19 B Purchase
4.2
Siebert Lawrence A.

CEO

Executive Director Large shareholder
4,000 +0.1%
0.11
US$440 		4,000 +0.1% 0.11 US$440
2008-05-19 2008-05-16 B Purchase
4.2
Siebert Lawrence A.

CEO

Executive Director Large shareholder
5,000 +0.1%
0.12
US$600 		5,000 +0.1% 0.12 US$600
2008-05-19 2008-05-16 B Purchase
4.2
Siebert Lawrence A.

CEO

Executive Director Large shareholder
120,000 +2.2%
0.11
US$12,600 		120,000 +2.2% 0.11 US$12,600
2008-05-19 2008-05-16 B Purchase
4.2
Siebert Lawrence A.

CEO

Executive Director Large shareholder
25,800 +0.5%
0.10
US$2,580 		25,800 +0.5% 0.10 US$2,580
2008-05-19 2008-05-16 B Purchase
4.2
Siebert Lawrence A.

CEO

Executive Director Large shareholder
10,000 +0.2%
0.09
US$900 		10,000 +0.2% 0.09 US$900
2008-05-19 2008-05-16 B Purchase
4.2
Siebert Lawrence A.

CEO

Executive Director Large shareholder
20,000 +0.4%
0.09
US$1,700 		20,000 +0.4% 0.09 US$1,700
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