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

Ocean Power Technologies Inc (OPTT)

Track

The most recent insider trading activity occurred on December 16, 2025, with a BUY transaction by the President and CEO. Prior to this, significant BUY transactions were made by the CFO and President and CEO in December 2025. Earlier BUY transactions by other insiders date back to November 2024 and September 2023.
Stock chart
Ticker: OPTT Exchange: ASE
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
Stratmann Philipp
President and CEO
1 purchase — total 2,558 USD
Buy 16 Dec 2025
Value US$3,181,338.16 | Price 358.80 | Shares 84,820
Buy 15 Dec 2025
Value US$124,624.82 | Price 107.31 | Shares 65,626
Buy 15 Dec 2025
Value US$4,999.93 | Price 0.34 | Shares 14,723
Buy 17 Sep 2025
Value US$1,974.56 | Price 0.50 | Shares 3,989
Buy 25 Nov 2024
Value US$6,713.00 | Price 0.19 | Shares 35,000
Buy 13 Nov 2024
Value US$14,800.00 | Price 0.15 | Shares 100,000
Buy 28 Sep 2023
Value US$9,750.00 | Price 0.39 | Shares 25,000
Buy 18 Sep 2023
Value US$4,950.34 | Price 0.40 | Shares 12,345
Buy 18 Sep 2023
Value US$0.00 | Price 0.00 | Shares 15,000
Buy 15 Sep 2023
Value US$0.00 | Price 0.00 | Shares 30,000
Buy 15 Sep 2023
Value US$4,998.65 | Price 0.41 | Shares 12,115
Sale 30 Dec 2020
Value US$72,397.50 | Price 2.90 | Shares 25,000
Buy 6 Nov 2018
Value US$5,852.34 | Price 0.55 | Shares 10,660
Buy 5 Nov 2018
Value US$2,259.92 | Price 0.53 | Shares 4,264
Buy 2 Nov 2018
Value US$7,730.63 | Price 0.52 | Shares 14,924
Buy 20 Sep 2018
Value US$33,200.00 | Price 0.66 | Shares 50,000
Buy 19 Sep 2018
Value US$1,283.15 | Price 0.59 | Shares 2,162
Buy 18 Sep 2018
Value US$27,395.00 | Price 0.55 | Shares 50,000
Buy 15 Aug 2018
Value US$8,690.40 | Price 0.72 | Shares 12,000
Buy 20 Mar 2018
Value US$8,120.00 | Price 1.16 | Shares 7,000
Buy 24 Oct 2016
Value US$19,908.00 | Price 3.16 | Shares 6,300
Buy 16 Jul 2015
Value US$4,060.00 | Price 0.58 | Shares 7,000
Buy 15 Jul 2015
Value US$1,330.04 | Price 0.60 | Shares 2,229
Buy 20 Jan 2015
Value US$5,100.00 | Price 0.51 | Shares 10,000
Buy 20 Jan 2015
Value US$5,240.00 | Price 0.52 | Shares 10,000
Buy 17 Dec 2014
Value US$3,023.00 | Price 0.60 | Shares 5,000
Buy 16 Dec 2014
Value US$2,950.00 | Price 0.59 | Shares 5,000
Buy 21 Jul 2011
Value US$5,840.00 | Price 3.65 | Shares 1,600
Buy 21 Jul 2011
Value US$1,464.00 | Price 3.66 | Shares 400
Sale 20 Apr 2011
Value US$61,880.00 | Price 4.76 | Shares 13,000
Sale 19 Apr 2011
Value US$57,120.00 | Price 4.76 | Shares 12,000
Sale 18 Apr 2011
Value US$71,700.00 | Price 4.78 | Shares 15,000
Sale 15 Apr 2011
Value US$49,000.00 | Price 4.90 | Shares 10,000
Sale 14 Jan 2011
Value US$11,256.00 | Price 5.60 | Shares 2,010
Sale 14 Jan 2011
Value US$99,540.00 | Price 5.53 | Shares 18,000
Sale 13 Jan 2011
Value US$89,920.00 | Price 5.62 | Shares 16,000
Sale 12 Jan 2011
Value US$34,200.00 | Price 5.70 | Shares 6,000
Sale 11 Jan 2011
Value US$115,200.00 | Price 5.76 | Shares 20,000
Sale 17 Dec 2010
Value US$147,790.56 | Price 5.64 | Shares 26,204
Sale 16 Dec 2010
Value US$120,408.84 | Price 5.79 | Shares 20,796
Sale 12 Oct 2010
Value US$22,910.00 | Price 5.73 | Shares 4,000
Sale 12 Oct 2010
Value US$178,920.00 | Price 5.68 | Shares 31,500
Sale 11 Oct 2010
Value US$74,377.40 | Price 5.29 | Shares 14,060
Sale 6 Oct 2010
Value US$87,193.60 | Price 5.24 | Shares 16,640
Sale 5 Oct 2010
Value US$15,176.00 | Price 5.42 | Shares 2,800
Sale 4 Oct 2010
Value US$105,800.00 | Price 5.29 | Shares 20,000
Buy 16 Jul 2010
Value US$10,880.00 | Price 5.44 | Shares 2,000
Sale 16 Oct 2009
Value US$134,550.00 | Price 8.97 | Shares 15,000
Sale 15 Oct 2009
Value US$278,600.00 | Price 7.96 | Shares 35,000
Buy 13 Oct 2009
Value US$16,500.00 | Price 5.50 | Shares 3,000
Buy 22 Sep 2009
Value US$3,908.64 | Price 4.79 | Shares 816
Buy 22 Sep 2009
Value US$6,615.52 | Price 4.78 | Shares 1,384
Buy 22 Sep 2009
Value US$25,758.00 | Price 4.77 | Shares 5,400
Buy 22 Sep 2009
Value US$5,307.40 | Price 4.76 | Shares 1,115
Buy 22 Sep 2009
Value US$6,103.75 | Price 4.75 | Shares 1,285
Sale 17 Jul 2009
Value US$78,450.00 | Price 5.23 | Shares 15,000
Sale 15 Apr 2009
Value US$91,598.64 | Price 5.88 | Shares 15,578
Sale 14 Apr 2009
Value US$69,920.64 | Price 5.97 | Shares 11,712
Sale 13 Apr 2009
Value US$137,168.40 | Price 6.04 | Shares 22,710
Sale 15 Jan 2009
Value US$159,580.50 | Price 5.57 | Shares 28,650
Sale 14 Jan 2009
Value US$55,998.00 | Price 6.12 | Shares 9,150
Sale 13 Jan 2009
Value US$98,192.00 | Price 6.46 | Shares 15,200
Buy 10 Oct 2008
Value US$3,250.00 | Price 6.50 | Shares 500
Buy 10 Oct 2008
Value US$6,320.00 | Price 6.32 | Shares 1,000
Buy 9 Oct 2008
Value US$3,375.00 | Price 6.75 | Shares 500
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
2025-12-16 2025-12-16 B Purchase
2.6
Stratmann Philipp

President and CEO

Executive Director
84,820 -20.5%
358.80
US$3,181,338 		84,820 -20.5% 358.80 US$3,181,338
2025-12-15 2025-12-15 B Purchase
2.6
Stratmann Philipp

President and CEO

Executive Director
65,626 -7.6%
107.31
US$124,625 		65,626 -7.6% 107.31 US$124,625
2025-12-15 2025-12-15 B Purchase
2.6
Powers Robert Patrick

CFO

Officer
95,117 +40.2%
25.68
US$1,177,465 		95,117 +40.2% 25.68 US$1,177,465
2025-09-18 2025-09-17 B Purchase
2.6
Stratmann Philipp

President and CEO

Executive Director
3,989 +0.8%
0.50
US$1,975 		3,989 +0.8% 0.50 US$1,975
2024-11-26 2024-11-25 B Purchase
3.2
Slaiby Peter E.
Non-Executive Director
35,000 +16.9%
0.19
US$6,713 		35,000 +16.9% 0.19 US$6,713
2024-11-15 2024-11-13 B Purchase
3.8
Cryan Terence James
Non-Executive Director
100,000 +38.7%
0.15
US$14,800 		100,000 +38.7% 0.15 US$14,800
2023-10-02 2023-09-28 B Purchase
3.2
Slaiby Peter E.
Non-Executive Director
25,000 +34.9%
0.39
US$9,750 		25,000 +34.9% 0.39 US$9,750
2023-09-20 2023-09-18 B Purchase
2.6
Powers Robert Patrick

Senior VP and CFO

Officer
12,345 +74.6%
0.40
US$4,950 		12,345 +74.6% 0.40 US$4,950
2023-09-19 2023-09-18 B Purchase
3.8
Cryan Terence James
Non-Executive Director
15,000
0.00
US$0 		15,000 0.00 US$0
2023-09-19 2023-09-15 B Purchase
3.8
Cryan Terence James
Non-Executive Director
30,000
0.00
US$0 		30,000 0.00 US$0
2023-09-18 2023-09-15 B Purchase
2.6
Stratmann Philipp

President and CEO

Executive Director
12,115 +14.8%
0.41
US$4,999 		12,115 +14.8% 0.41 US$4,999
2021-01-04 2020-12-30 S Sale
1.5
WINTERS ROBERT K
Non-Executive Director
25,000 -100.0%
2.90
US$72,398 		25,000 -100.0% 2.90 US$72,398
2018-11-06 2018-11-06 B Purchase Kirby George H III

President, CEO

Executive Director
10,660 +8.3%
0.55
US$5,852 		10,660 +8.3% 0.55 US$5,852
2018-11-06 2018-11-05 B Purchase Kirby George H III

President, CEO

Executive Director
4,264 +3.4%
0.53
US$2,260 		4,264 +3.4% 0.53 US$2,260
2018-11-06 2018-11-02 B Purchase Kirby George H III

President, CEO

Executive Director
14,924 +13.7%
0.52
US$7,731 		14,924 +13.7% 0.52 US$7,731
2018-09-24 2018-09-20 B Purchase Glover Dean J Non-Executive Director
50,000 +91.0%
0.66
US$33,200 		50,000 +91.0% 0.66 US$33,200
2018-09-21 2018-09-19 B Purchase Cryan Terence James Non-Executive Director
2,162 +42.8%
0.59
US$1,283 		2,162 +42.8% 0.59 US$1,283
2018-09-20 2018-09-18 B Purchase Glover Dean J Non-Executive Director
50,000 +1010.1%
0.55
US$27,395 		50,000 +1010.1% 0.55 US$27,395
2018-08-17 2018-08-15 B Purchase FLUDDER STEVEN M Non-Executive Director
12,000 +inf%
0.72
US$8,690 		12,000 +inf% 0.72 US$8,690
2018-03-20 2018-03-20 B Purchase Kirby George H III

President, CEO

Executive Director
7,000 +6.9%
1.16
US$8,120 		7,000 +6.9% 1.16 US$8,120
2016-10-25 2016-10-24 B Purchase Kirby George H III

President, CEO

Executive Director
6,300 +8.6%
3.16
US$19,908 		6,300 +8.6% 3.16 US$19,908
2015-07-17 2015-07-16 B Purchase Kirby George H III

President, CEO

Executive Director
7,000 +3.8%
0.58
US$4,060 		7,000 +3.8% 0.58 US$4,060
2015-07-17 2015-07-15 B Purchase Kirby George H III

President, CEO

Executive Director
2,229 +1.2%
0.60
US$1,330 		2,229 +1.2% 0.60 US$1,330
2015-01-22 2015-01-20 B Purchase Heinz David R

Chief Operating Officer

Officer
10,000 +7.3%
0.51
US$5,100 		10,000 +7.3% 0.51 US$5,100
2015-01-22 2015-01-20 B Purchase Heinz David R

Chief Operating Officer

Officer
10,000 +7.9%
0.52
US$5,240 		10,000 +7.9% 0.52 US$5,240
2014-12-18 2014-12-17 B Purchase FEATHERSTONE MARK A

Chief Financial Officer

Officer
5,000 +inf%
0.60
US$3,023 		5,000 +inf% 0.60 US$3,023
2014-12-17 2014-12-16 B Purchase Heinz David R

Chief Operating Officer

Officer
5,000 +4.1%
0.59
US$2,950 		5,000 +4.1% 0.59 US$2,950
2011-07-21 2011-07-21 B Purchase POSNER BRIAN M

Chief Financial Officer

Officer
1,600 +11.9%
3.65
US$5,840 		1,600 +11.9% 3.65 US$5,840
2011-07-21 2011-07-21 B Purchase POSNER BRIAN M

Chief Financial Officer

Officer
400 +3.1%
3.66
US$1,464 		400 +3.1% 3.66 US$1,464
2011-04-20 2011-04-20 S Sale Taylor George W

Executive Chairman

Executive Director
13,000 -2.7%
4.76
US$61,880 		13,000 -2.7% 4.76 US$61,880
2011-04-19 2011-04-19 S Sale Taylor George W

Executive Chairman

Executive Director
12,000 -2.5%
4.76
US$57,120 		12,000 -2.5% 4.76 US$57,120
2011-04-19 2011-04-18 S Sale Taylor George W

Executive Chairman

Executive Director
15,000 -3.0%
4.78
US$71,700 		15,000 -3.0% 4.78 US$71,700
2011-04-19 2011-04-15 S Sale Taylor George W

Executive Chairman

Executive Director
10,000 -1.9%
4.90
US$49,000 		10,000 -1.9% 4.90 US$49,000
2011-01-19 2011-01-14 S Sale Dunleavy Charles F

Chief Executive Officer

Executive Director
2,010 -1.0%
5.60
US$11,256 		2,010 -1.0% 5.60 US$11,256
2011-01-18 2011-01-14 S Sale Taylor George W

Executive Chairman

Executive Director
18,000 -3.4%
5.53
US$99,540 		18,000 -3.4% 5.53 US$99,540
2011-01-18 2011-01-13 S Sale Taylor George W

Executive Chairman

Executive Director
16,000 -2.9%
5.62
US$89,920 		16,000 -2.9% 5.62 US$89,920
2011-01-13 2011-01-12 S Sale Taylor George W

Executive Chairman

Executive Director
6,000 -1.1%
5.70
US$34,200 		6,000 -1.1% 5.70 US$34,200
2011-01-13 2011-01-11 S Sale Taylor George W

Executive Chairman

Executive Director
20,000 -3.5%
5.76
US$115,200 		20,000 -3.5% 5.76 US$115,200
2010-12-20 2010-12-17 S Sale Taylor George W

Executive Chairman

Executive Director
26,204 -4.4%
5.64
US$147,791 		26,204 -4.4% 5.64 US$147,791
2010-12-20 2010-12-16 S Sale Taylor George W

Executive Chairman

Executive Director
20,796 -3.3%
5.79
US$120,409 		20,796 -3.3% 5.79 US$120,409
2010-10-14 2010-10-12 S Sale LOZIER PAUL F Non-Executive Director
4,000 -28.4%
5.73
US$22,910 		4,000 -28.4% 5.73 US$22,910
2010-10-13 2010-10-12 S Sale Taylor George W

Executive Chairman

Executive Director
31,500 -4.8%
5.68
US$178,920 		31,500 -4.8% 5.68 US$178,920
2010-10-13 2010-10-11 S Sale Taylor George W

Executive Chairman

Executive Director
14,060 -2.1%
5.29
US$74,377 		14,060 -2.1% 5.29 US$74,377
2010-10-08 2010-10-06 S Sale Taylor George W

Executive Chairman

Executive Director
16,640 -2.4%
5.24
US$87,194 		16,640 -2.4% 5.24 US$87,194
2010-10-06 2010-10-05 S Sale Taylor George W

Executive Chairman

Executive Director
2,800 -0.4%
5.42
US$15,176 		2,800 -0.4% 5.42 US$15,176
2010-10-06 2010-10-04 S Sale Taylor George W

Executive Chairman

Executive Director
20,000 -2.8%
5.29
US$105,800 		20,000 -2.8% 5.29 US$105,800
2010-07-20 2010-07-16 B Purchase POSNER BRIAN M

Chief Financial Officer

Officer
2,000 +inf%
5.44
US$10,880 		2,000 +inf% 5.44 US$10,880
2009-10-19 2009-10-16 S Sale Taylor George W

Chief Executive Officer

Executive Director Large shareholder
15,000 -2.1%
8.97
US$134,550 		15,000 -2.1% 8.97 US$134,550
2009-10-19 2009-10-15 S Sale Taylor George W

Chief Executive Officer

Executive Director Large shareholder
35,000 -4.7%
7.96
US$278,600 		35,000 -4.7% 7.96 US$278,600
2009-10-14 2009-10-13 B Purchase PRESTON SEYMOUR S III Non-Executive Director
3,000 +36.4%
5.50
US$16,500 		3,000 +36.4% 5.50 US$16,500
2009-09-23 2009-09-22 B Purchase CHATIGNY VICTOR J Non-Executive Director
816 +8.9%
4.79
US$3,909 		816 +8.9% 4.79 US$3,909
2009-09-23 2009-09-22 B Purchase CHATIGNY VICTOR J Non-Executive Director
1,384 +17.7%
4.78
US$6,616 		1,384 +17.7% 4.78 US$6,616
2009-09-23 2009-09-22 B Purchase CHATIGNY VICTOR J Non-Executive Director
5,400 +225.0%
4.77
US$25,758 		5,400 +225.0% 4.77 US$25,758
2009-09-23 2009-09-22 B Purchase CHATIGNY VICTOR J Non-Executive Director
1,115 +86.8%
4.76
US$5,307 		1,115 +86.8% 4.76 US$5,307
2009-09-23 2009-09-22 B Purchase CHATIGNY VICTOR J Non-Executive Director
1,285 +inf%
4.75
US$6,104 		1,285 +inf% 4.75 US$6,104
2009-07-20 2009-07-17 S Sale Taylor George W

Executive Chairman

Executive Director Large shareholder
15,000 -2.0%
5.23
US$78,450 		15,000 -2.0% 5.23 US$78,450
2009-04-15 2009-04-15 S Sale Taylor George W

Executive Chairman

Executive Director Large shareholder
15,578 -2.0%
5.88
US$91,599 		15,578 -2.0% 5.88 US$91,599
2009-04-15 2009-04-14 S Sale Taylor George W

Executive Chairman

Executive Director Large shareholder
11,712 -1.5%
5.97
US$69,921 		11,712 -1.5% 5.97 US$69,921
2009-04-15 2009-04-13 S Sale Taylor George W

Executive Chairman

Executive Director Large shareholder
22,710 -2.8%
6.04
US$137,168 		22,710 -2.8% 6.04 US$137,168
2009-01-15 2009-01-15 S Sale Taylor George W

Chief Executive Officer

Executive Director Large shareholder
28,650 -3.4%
5.57
US$159,580 		28,650 -3.4% 5.57 US$159,580
2009-01-15 2009-01-14 S Sale Taylor George W

Chief Executive Officer

Executive Director Large shareholder
9,150 -1.1%
6.12
US$55,998 		9,150 -1.1% 6.12 US$55,998
2009-01-15 2009-01-13 S Sale Taylor George W

Chief Executive Officer

Executive Director Large shareholder
15,200 -1.8%
6.46
US$98,192 		15,200 -1.8% 6.46 US$98,192
2008-10-14 2008-10-10 B Purchase LOZIER PAUL F Non-Executive Director
500 +5.2%
6.50
US$3,250 		500 +5.2% 6.50 US$3,250
2008-10-14 2008-10-10 B Purchase LOZIER PAUL F Non-Executive Director
1,000 +11.6%
6.32
US$6,320 		1,000 +11.6% 6.32 US$6,320
2008-10-14 2008-10-09 B Purchase LOZIER PAUL F Non-Executive Director
500 +6.2%
6.75
US$3,375 		500 +6.2% 6.75 US$3,375
Explore more

More insider trading research around Ocean Power Technologies Inc

More insider trades in United States
Similar Energy companies with insider activity
More Renewable Energy companies with insider activity
More Renewable Energy companies with insider activity
Insider trading in North America