United States Homebuilding & Construction Supplies

Energy Focus Inc (EFOI)

Track

The most recent insider trading activity at Energy Focus Inc. occurred on November 26, 2025, when CEO Huang Chiao Chieh purchased 262,009 shares. This follows a series of buy transactions by the same executive throughout 2025. There have been no reported insider transactions in the last three months.
Ticker: EFOI Exchange: NAS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Insider trades have triggered activity signals for Energy Focus Inc. Upgrade to see score, net flow, insiders and the full signal context.

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Top insiders
Trades
Buy 26 Nov 2025
Value US$1,666,960.00 | Price 256.99 | Shares 33,513 (+20.6%)
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
2025-12-31 2025-11-26 B Purchase
3.3
Huang Chiao Chieh

Chief Executive Officer

Executive Director Large shareholder
33,513 +20.6%
256.99
US$1,666,960 		33,513 +20.6% 256.99 US$1,666,960
2025-08-19 2025-08-15 B Purchase
3.3
Huang Chiao Chieh

Chief Executive Officer

Executive Director Large shareholder
4,527 -10.0%
445.39
US$1,862,323 		4,527 -10.0% 445.39 US$1,862,323
2025-06-23 2025-06-23 B Purchase
3.3
Huang Chiao Chieh

Chief Executive Officer

Executive Director Large shareholder
38,752 +27.8%
21.38
US$3,444,115 		38,752 +27.8% 21.38 US$3,444,115
2025-06-23 2025-03-27 B Purchase
3.3
Huang Chiao Chieh

Chief Executive Officer

Executive Director Large shareholder
103,627 +15.2%
1.93
US$200,000 		103,627 +15.2% 1.93 US$200,000
2020-04-15 2020-04-15 B Purchase
3.7
NESTOR TOD A

President, CFO

Officer
42,470 +39.5%
0.37
US$15,599 		42,470 +39.5% 0.37 US$15,599
2020-04-15 2020-04-14 B Purchase
3.7
NESTOR TOD A

President, CFO

Officer
55,830 +108.0%
0.37
US$20,624 		55,830 +108.0% 0.37 US$20,624
2020-04-15 2020-04-13 B Purchase
3.7
NESTOR TOD A

President, CFO

Officer
51,700 +inf%
0.32
US$16,482 		51,700 +inf% 0.32 US$16,482
2020-04-15 2020-04-13 B Purchase
3.4
Politziner Philip
Non-Executive Director
32,000 +160.0%
0.31
US$9,920 		32,000 +160.0% 0.31 US$9,920
2017-05-19 2017-05-19 B Purchase Tewksbury Ted L III

Chairman, CEO & President

Executive Director
3,333 +100.0%
3.13
US$10,445 		3,333 +100.0% 3.13 US$10,445
2017-05-16 2017-05-08 B Purchase Tewksbury Ted L III

Chairman, CEO & President

Executive Director
3,333 +inf%
3.14
US$10,451 		3,333 +inf% 3.14 US$10,451
2017-03-13 2017-03-10 B Purchase White Bradley Brian

CFO & Secretary
1,075 +inf%
3.12
US$3,354 		1,075 +inf% 3.12 US$3,354
2017-03-13 2017-03-10 B Purchase White Bradley Brian

CFO & Secretary
975 +inf%
3.12
US$3,042 		975 +inf% 3.12 US$3,042
2017-03-13 2017-03-10 B Purchase White Bradley Brian

CFO & Secretary
1,600 +inf%
3.13
US$5,008 		1,600 +inf% 3.13 US$5,008
2016-04-27 2016-03-14 B Purchase Cohen William Non-Executive Director
1,259 +inf%
7.88
US$9,921 		1,259 +inf% 7.88 US$9,921
2016-03-16 2016-03-14 B Purchase Ramelot Michael Rush Non-Executive Director
3,000 +inf%
8.05
US$24,150 		3,000 +inf% 8.05 US$24,150
2015-09-18 2015-09-16 S Sale Luo Jiangang Non-Executive Director
391,304 -43.0%
15.98
US$6,253,038 		391,304 -43.0% 15.98 US$6,253,038
2015-09-18 2015-09-16 S Sale Huang Gina Large shareholder
434,783 -51.0%
15.98
US$6,947,832 		434,783 -51.0% 15.98 US$6,947,832
2015-09-18 2015-09-16 S Sale Bright Horizon Partners Inc. Large shareholder
391,304 -38.0%
15.98
US$6,253,038 		391,304 -38.0% 15.98 US$6,253,038
2015-04-02 2015-04-01 S Sale Bright Horizon Partners Inc. Large shareholder
100,000 -8.8%
4.00
US$400,000 		100,000 -8.8% 4.00 US$400,000
2015-01-28 2015-01-20 B Purchase Huang Gina Large shareholder
200,000 +33.3%
4.50
US$900,000 		200,000 +33.3% 4.50 US$900,000
2012-01-09 2012-01-06 S Sale Gelbaum David Large shareholder
2,400 -0.2%
0.19
US$444 		2,400 -0.2% 0.19 US$444
2011-06-29 2011-06-27 S Sale Gelbaum David

Former 10% Owner
3,965,000 -77.7%
0.40
US$1,586,000 		3,965,000 -77.7% 0.40 US$1,586,000
2011-06-17 2011-06-17 S Sale Gelbaum David Large shareholder
3,500 -0.1%
0.42
US$1,464 		3,500 -0.1% 0.42 US$1,464
2011-06-17 2011-06-16 S Sale Gelbaum David Large shareholder
7,800 -0.2%
0.42
US$3,312 		7,800 -0.2% 0.42 US$3,312
2011-06-17 2011-06-15 S Sale Gelbaum David Large shareholder
20,000 -0.4%
0.34
US$6,834 		20,000 -0.4% 0.34 US$6,834
2011-06-17 2011-06-14 S Sale Gelbaum David Large shareholder
2,500 -0.0%
0.51
US$1,267 		2,500 -0.0% 0.51 US$1,267
2011-05-10 2011-05-06 S Sale Gelbaum David Large shareholder
8,000 -0.2%
0.70
US$5,602 		8,000 -0.2% 0.70 US$5,602
2011-05-10 2011-05-05 S Sale Gelbaum David Large shareholder
8,500 -0.2%
0.70
US$5,965 		8,500 -0.2% 0.70 US$5,965
2011-05-10 2011-05-04 S Sale Gelbaum David Large shareholder
16,000 -0.3%
0.74
US$11,912 		16,000 -0.3% 0.74 US$11,912
2011-03-31 2011-03-31 S Sale Gelbaum David Non-Executive Director Large shareholder
18,000 -0.4%
1.15
US$20,675 		18,000 -0.4% 1.15 US$20,675
2011-03-31 2011-03-30 S Sale Gelbaum David Non-Executive Director Large shareholder
24,500 -0.5%
1.13
US$27,714 		24,500 -0.5% 1.13 US$27,714
2011-03-31 2011-03-29 S Sale Gelbaum David Non-Executive Director Large shareholder
80,000 -1.5%
1.25
US$100,104 		80,000 -1.5% 1.25 US$100,104
2011-03-10 2011-03-09 S Sale Gelbaum David Large shareholder
86,200 -1.6%
1.14
US$98,475 		86,200 -1.6% 1.14 US$98,475
2011-03-01 2011-02-24 S Sale Gelbaum David Non-Executive Director Large shareholder
6,500 -0.1%
1.00
US$6,515 		6,500 -0.1% 1.00 US$6,515
2011-02-24 2011-02-23 S Sale Gelbaum David Large shareholder
23,300 -0.4%
1.00
US$23,400 		23,300 -0.4% 1.00 US$23,400
2011-02-24 2011-02-22 S Sale Gelbaum David Large shareholder
6,500 -0.1%
1.01
US$6,532 		6,500 -0.1% 1.01 US$6,532
2011-02-03 2011-01-31 S Sale Gelbaum David Large shareholder
42,000 -0.8%
1.01
US$42,256 		42,000 -0.8% 1.01 US$42,256
2011-01-18 2011-01-18 S Sale Gelbaum David Large shareholder
41,300 -0.8%
1.06
US$43,939 		41,300 -0.8% 1.06 US$43,939
2011-01-18 2011-01-14 S Sale Gelbaum David Large shareholder
68,500 -1.3%
1.05
US$72,083 		68,500 -1.3% 1.05 US$72,083
2011-01-18 2011-01-13 S Sale Gelbaum David Large shareholder
15,000 -0.3%
1.01
US$15,075 		15,000 -0.3% 1.01 US$15,075
2011-01-06 2011-01-05 S Sale Gelbaum David Large shareholder
2,000 -0.0%
1.06
US$2,120 		2,000 -0.0% 1.06 US$2,120
2011-01-06 2011-01-04 S Sale Gelbaum David Large shareholder
12,500 -0.2%
1.00
US$12,500 		12,500 -0.2% 1.00 US$12,500
2010-12-29 2010-12-21 S Sale Gelbaum David Large shareholder
9,000 -0.2%
1.00
US$9,000 		9,000 -0.2% 1.00 US$9,000
2010-12-17 2010-12-16 S Sale Gelbaum David Large shareholder
5,500 -0.1%
1.00
US$5,500 		5,500 -0.1% 1.00 US$5,500
2010-12-17 2010-12-15 S Sale Gelbaum David Large shareholder
12,200 -0.2%
1.00
US$12,200 		12,200 -0.2% 1.00 US$12,200
2010-12-15 2010-12-14 S Sale Gelbaum David Large shareholder
5,000 -0.1%
1.01
US$5,050 		5,000 -0.1% 1.01 US$5,050
2010-12-15 2010-12-13 S Sale Gelbaum David Large shareholder
10,000 -0.2%
1.01
US$10,056 		10,000 -0.2% 1.01 US$10,056
2010-12-15 2010-12-10 S Sale Gelbaum David Large shareholder
22,600 -0.4%
1.00
US$22,645 		22,600 -0.4% 1.00 US$22,645
2010-12-15 2010-12-02 S Sale Gelbaum David Large shareholder
10,000 -0.2%
1.01
US$10,100 		10,000 -0.2% 1.01 US$10,100
2010-12-01 2010-11-30 S Sale Gelbaum David Large shareholder
14,000 -0.3%
1.00
US$14,001 		14,000 -0.3% 1.00 US$14,001
2010-12-01 2010-11-29 S Sale Gelbaum David Large shareholder
14,500 -0.3%
1.02
US$14,819 		14,500 -0.3% 1.02 US$14,819
2010-12-01 2010-11-26 S Sale Gelbaum David Large shareholder
10,000 -0.2%
1.01
US$10,102 		10,000 -0.2% 1.01 US$10,102
2010-11-24 2010-11-24 S Sale Gelbaum David Large shareholder
6,700 -0.1%
1.00
US$6,713 		6,700 -0.1% 1.00 US$6,713
2010-11-24 2010-11-23 S Sale Gelbaum David Large shareholder
4,400 -0.1%
1.00
US$4,400 		4,400 -0.1% 1.00 US$4,400
2010-11-24 2010-11-22 S Sale Gelbaum David Large shareholder
17,700 -0.3%
1.00
US$17,764 		17,700 -0.3% 1.00 US$17,764
2010-11-18 2010-11-18 S Sale Gelbaum David Large shareholder
10,500 -0.2%
1.10
US$11,550 		10,500 -0.2% 1.10 US$11,550
2010-12-17 2010-11-17 S Sale Gelbaum David Large shareholder
50,000 -0.9%
1.01
US$50,735 		50,000 -0.9% 1.01 US$50,735
2010-11-18 2010-11-17 S Sale Gelbaum David Large shareholder
9,000 -0.2%
1.10
US$9,909 		9,000 -0.2% 1.10 US$9,909
2010-11-18 2010-11-16 S Sale Gelbaum David Large shareholder
10,700 -0.2%
1.10
US$11,770 		10,700 -0.2% 1.10 US$11,770
2010-11-15 2010-11-15 S Sale Gelbaum David Large shareholder
7,500 -0.1%
1.10
US$8,253 		7,500 -0.1% 1.10 US$8,253
2010-11-15 2010-11-12 S Sale Gelbaum David Large shareholder
121,500 -2.1%
1.19
US$144,852 		121,500 -2.1% 1.19 US$144,852
2010-11-15 2010-11-11 S Sale Gelbaum David Large shareholder
15,000 -0.3%
1.15
US$17,230 		15,000 -0.3% 1.15 US$17,230
2010-11-10 2010-11-10 S Sale Gelbaum David Large shareholder
7,500 -0.1%
1.14
US$8,535 		7,500 -0.1% 1.14 US$8,535
2010-11-10 2010-11-08 S Sale Gelbaum David Large shareholder
7,500 -0.1%
1.12
US$8,416 		7,500 -0.1% 1.12 US$8,416
2010-11-05 2010-11-05 S Sale Gelbaum David Large shareholder
11,000 -0.2%
1.16
US$12,713 		11,000 -0.2% 1.16 US$12,713
2010-11-05 2010-11-04 S Sale Gelbaum David Large shareholder
7,500 -0.1%
1.11
US$8,330 		7,500 -0.1% 1.11 US$8,330
2010-11-05 2010-11-03 S Sale Gelbaum David Large shareholder
9,000 -0.2%
1.13
US$10,171 		9,000 -0.2% 1.13 US$10,171
2010-11-03 2010-11-01 S Sale Gelbaum David Large shareholder
7,500 -0.1%
1.15
US$8,625 		7,500 -0.1% 1.15 US$8,625
2010-11-03 2010-10-29 S Sale Gelbaum David Large shareholder
6,500 -0.1%
1.12
US$7,305 		6,500 -0.1% 1.12 US$7,305
2010-10-26 2010-10-26 S Sale Gelbaum David Large shareholder
9,600 -0.2%
1.11
US$10,685 		9,600 -0.2% 1.11 US$10,685
2010-10-26 2010-10-25 S Sale Gelbaum David Large shareholder
7,500 -0.1%
1.10
US$8,282 		7,500 -0.1% 1.10 US$8,282
2010-10-26 2010-10-22 S Sale Gelbaum David Large shareholder
6,000 -0.1%
1.18
US$7,103 		6,000 -0.1% 1.18 US$7,103
2010-10-21 2010-10-21 S Sale Gelbaum David Large shareholder
4,500 -0.1%
1.16
US$5,217 		4,500 -0.1% 1.16 US$5,217
2010-10-21 2010-10-20 S Sale Gelbaum David Large shareholder
13,000 -0.2%
1.13
US$14,691 		13,000 -0.2% 1.13 US$14,691
2010-10-21 2010-10-19 S Sale Gelbaum David Large shareholder
9,000 -0.2%
1.20
US$10,836 		9,000 -0.2% 1.20 US$10,836
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