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

Alto Ingredients Inc (ALTO)

Track

Over the last 90 days, Alto Ingredients Inc. has seen a net insider buying activity totaling $114,450. There was one net insider buying transaction. Notably, NATHAN GILBERT E made significant purchases in May 2026, totaling $114,450. The company's stock has experienced a 32.3% increase in the past 90 days.
Stock chart
Ticker: ALTO Exchange: NAS
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
NATHAN GILBERT E
1 purchase — total 22,250 USD
Buy 13 May 2026
Value US$4,615,999.42 | Price 236.17 | Shares 23,431
Buy 12 May 2026
Value US$4,409,876.98 | Price 392.86 | Shares 17,355
Buy 13 Aug 2025
Value US$3,364.34 | Price 1.06 | Shares 3,176
Buy 13 Nov 2024
Value US$6,625.00 | Price 1.33 | Shares 5,000
Buy 13 Nov 2024
Value US$33,475.00 | Price 1.34 | Shares 25,000
Buy 12 Nov 2024
Value US$50,423.60 | Price 1.36 | Shares 37,000
Buy 12 Nov 2024
Value US$9,959.25 | Price 1.36 | Shares 7,350
Buy 1 Jun 2023
Value US$9,850.00 | Price 1.97 | Shares 5,000
Buy 31 May 2023
Value US$9,949.50 | Price 1.99 | Shares 5,000
Buy 17 Mar 2023
Value US$17,100.00 | Price 1.71 | Shares 10,000
Buy 16 Mar 2023
Value US$18,100.00 | Price 1.81 | Shares 10,000
Buy 16 Mar 2023
Value US$4,995.00 | Price 1.85 | Shares 2,700
Buy 15 Mar 2023
Value US$27,900.00 | Price 1.86 | Shares 15,000
Buy 14 Mar 2023
Value US$5,001.48 | Price 1.98 | Shares 2,526
Buy 16 Dec 2022
Value US$94,850.00 | Price 2.71 | Shares 35,000
Buy 16 Dec 2022
Value US$13,650.00 | Price 2.73 | Shares 5,000
Buy 20 May 2022
Value US$50,404.90 | Price 4.06 | Shares 12,415
Buy 20 May 2022
Value US$80,800.00 | Price 4.04 | Shares 20,000
Buy 8 Dec 2021
Value US$49,600.00 | Price 4.96 | Shares 10,000
Buy 22 Nov 2021
Value US$25,800.00 | Price 5.16 | Shares 5,000
Buy 19 Nov 2021
Value US$25,650.00 | Price 5.13 | Shares 5,000
Buy 15 Nov 2021
Value US$82,050.00 | Price 5.47 | Shares 15,000
Buy 12 Nov 2021
Value US$23,200.00 | Price 5.80 | Shares 4,000
Buy 12 Nov 2021
Value US$57,300.00 | Price 5.73 | Shares 10,000
Sale 12 Nov 2021
Value US$375,498.36 | Price 5.73 | Shares 65,532
Sale 2 Jun 2021
Value US$151,352.16 | Price 6.96 | Shares 21,746
Buy 18 May 2021
Value US$373,657.10 | Price 5.65 | Shares 66,134
Buy 17 May 2021
Value US$31,558.00 | Price 5.09 | Shares 6,200
Buy 17 May 2021
Value US$37,430.75 | Price 5.11 | Shares 7,325
Sale 17 Mar 2021
Value US$119,600.00 | Price 5.98 | Shares 20,000
Sale 15 Mar 2021
Value US$601,000.00 | Price 6.01 | Shares 100,000
Sale 1 Dec 2020
Value US$223,631.68 | Price 6.02 | Shares 37,179
Buy 27 Aug 2020
Value US$17,750.00 | Price 3.55 | Shares 5,000
Buy 26 Aug 2020
Value US$13,452.45 | Price 3.53 | Shares 3,811
Buy 26 Aug 2020
Value US$56,794.17 | Price 3.53 | Shares 16,089
Buy 26 Aug 2020
Value US$352.50 | Price 3.53 | Shares 100
Buy 26 Aug 2020
Value US$18,699.46 | Price 3.53 | Shares 5,300
Buy 26 Aug 2020
Value US$16,600.00 | Price 3.32 | Shares 5,000
Buy 26 Aug 2020
Value US$23,444.73 | Price 3.31 | Shares 7,083
Buy 26 Aug 2020
Value US$329.90 | Price 3.30 | Shares 100
Buy 26 Aug 2020
Value US$42,296.10 | Price 3.30 | Shares 12,817
Buy 26 Aug 2020
Value US$8,424.75 | Price 3.37 | Shares 2,500
Buy 26 Aug 2020
Value US$113,531.04 | Price 3.36 | Shares 33,789
Buy 26 Aug 2020
Value US$6.71 | Price 3.36 | Shares 2
Buy 26 Aug 2020
Value US$30,873.60 | Price 3.35 | Shares 9,216
Buy 26 Aug 2020
Value US$20,901.72 | Price 3.34 | Shares 6,258
Buy 26 Aug 2020
Value US$2,425.50 | Price 3.30 | Shares 735
Buy 26 Aug 2020
Value US$16,500.00 | Price 3.30 | Shares 5,000
Buy 25 Aug 2020
Value US$17,600.00 | Price 4.00 | Shares 4,400
Buy 25 Aug 2020
Value US$399.99 | Price 4.00 | Shares 100
Buy 25 Aug 2020
Value US$11,970.00 | Price 3.99 | Shares 3,000
Buy 25 Aug 2020
Value US$10,050.00 | Price 4.02 | Shares 2,500
Buy 24 Aug 2020
Value US$38,300.00 | Price 3.83 | Shares 10,000
Sale 18 Aug 2020
Value US$414,345.00 | Price 5.00 | Shares 82,869
Buy 18 Aug 2020
Value US$4,973.50 | Price 5.08 | Shares 980
Buy 14 Aug 2020
Value US$171,245.00 | Price 3.42 | Shares 50,000
Buy 13 Aug 2020
Value US$2,334.50 | Price 3.22 | Shares 725
Buy 13 Aug 2020
Value US$9,659.70 | Price 3.22 | Shares 3,000
Buy 13 Aug 2020
Value US$9,540.00 | Price 3.18 | Shares 3,000
Buy 12 Jun 2020
Value US$1,068.02 | Price 0.84 | Shares 1,278
Buy 12 Jun 2020
Value US$3,260.32 | Price 0.82 | Shares 3,976
Buy 12 Jun 2020
Value US$11,068.65 | Price 0.82 | Shares 13,500
Buy 12 Jun 2020
Value US$336.94 | Price 0.82 | Shares 411
Buy 12 Jun 2020
Value US$163.90 | Price 0.82 | Shares 200
Buy 12 Jun 2020
Value US$818.80 | Price 0.82 | Shares 1,000
Buy 12 Jun 2020
Value US$326.00 | Price 0.82 | Shares 400
Buy 11 Jun 2020
Value US$1,261.61 | Price 0.67 | Shares 1,883
Buy 22 Aug 2019
Value US$57,000.00 | Price 0.57 | Shares 100,000
Buy 5 Jun 2019
Value US$12,634.05 | Price 0.95 | Shares 13,299
Buy 16 Mar 2018
Value US$8,875.00 | Price 3.55 | Shares 2,500
Buy 9 Mar 2018
Value US$9,750.00 | Price 3.25 | Shares 3,000
Buy 8 Mar 2018
Value US$20,800.00 | Price 3.20 | Shares 6,500
Buy 8 Mar 2018
Value US$95,895.00 | Price 3.20 | Shares 30,000
Buy 6 Mar 2018
Value US$36,950.00 | Price 3.70 | Shares 10,000
Sale 7 Dec 2017
Value US$86,000.00 | Price 4.30 | 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
2026-05-14 2026-05-13 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
23,431 -10.9%
236.17
US$4,615,999 		23,431 -10.9% 236.17 US$4,615,999
2026-05-14 2026-05-12 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
17,355 +22.2%
392.86
US$4,409,877 		17,355 +22.2% 392.86 US$4,409,877
2025-08-14 2025-08-13 B Purchase
3.4
Sneed James R

Chief Commercial Officer

Officer
74,724 -31.5%
449.87
US$663,917 		74,724 -31.5% 449.87 US$663,917
2024-11-15 2024-11-13 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
5,000 +19.1%
1.33
US$6,625 		5,000 +19.1% 1.33 US$6,625
2024-11-15 2024-11-13 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
25,000 +3.7%
1.34
US$33,475 		25,000 +3.7% 1.34 US$33,475
2024-11-13 2024-11-12 B Purchase
3.7
McGregor Bryon T

President & CEO

Executive Director
37,000 +4.6%
1.36
US$50,424 		37,000 +4.6% 1.36 US$50,424
2024-11-13 2024-11-12 B Purchase
2.9
Olander Robert R.

Chief Financial Officer

Officer
7,350 +3.4%
1.36
US$9,959 		7,350 +3.4% 1.36 US$9,959
2023-06-02 2023-06-01 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
5,000 +0.9%
1.97
US$9,850 		5,000 +0.9% 1.97 US$9,850
2023-06-02 2023-05-31 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
5,000 +0.9%
1.99
US$9,950 		5,000 +0.9% 1.99 US$9,950
2023-03-20 2023-03-17 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
10,000 +1.8%
1.71
US$17,100 		10,000 +1.8% 1.71 US$17,100
2023-03-17 2023-03-16 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
10,000 +1.8%
1.81
US$18,100 		10,000 +1.8% 1.81 US$18,100
2023-03-16 2023-03-16 B Purchase
2.7
Graham Auste M

Gen. Counsel, VP & Secy

Officer
2,700 +4.3%
1.85
US$4,995 		2,700 +4.3% 1.85 US$4,995
2023-03-17 2023-03-15 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
15,000 +2.8%
1.86
US$27,900 		15,000 +2.8% 1.86 US$27,900
2023-03-16 2023-03-14 B Purchase
2.7
Graham Auste M

Gen. Counsel, VP & Secy

Officer
2,526 +4.2%
1.98
US$5,001 		2,526 +4.2% 1.98 US$5,001
2022-12-19 2022-12-16 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
35,000 +6.9%
2.71
US$94,850 		35,000 +6.9% 2.71 US$94,850
2022-12-19 2022-12-16 B Purchase
1.4
Gray Maria G
Non-Executive Director
5,000 +22.4%
2.73
US$13,650 		5,000 +22.4% 2.73 US$13,650
2022-05-23 2022-05-20 B Purchase
3.0
Kandris Michael D

President, CEO & COO

Executive Director
12,415 +2.3%
4.06
US$50,405 		12,415 +2.3% 4.06 US$50,405
2022-05-23 2022-05-20 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
20,000 +4.3%
4.04
US$80,800 		20,000 +4.3% 4.04 US$80,800
2021-12-09 2021-12-08 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
10,000 +2.2%
4.96
US$49,600 		10,000 +2.2% 4.96 US$49,600
2021-11-23 2021-11-22 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
5,000 +1.1%
5.16
US$25,800 		5,000 +1.1% 5.16 US$25,800
2021-11-23 2021-11-19 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
5,000 +1.1%
5.13
US$25,650 		5,000 +1.1% 5.13 US$25,650
2021-11-16 2021-11-15 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
15,000 +3.5%
5.47
US$82,050 		15,000 +3.5% 5.47 US$82,050
2021-11-16 2021-11-12 B Purchase
3.7
McGregor Bryon T

Chief Financial Officer

Officer
4,000 +1.3%
5.80
US$23,200 		4,000 +1.3% 5.80 US$23,200
2021-11-16 2021-11-12 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
10,000 +2.4%
5.73
US$57,300 		10,000 +2.4% 5.73 US$57,300
2021-11-16 2021-11-12 S Sale
2.8
Wright Christopher W

VP, Gen. Counsel & Secy

Officer
65,532 -44.8%
5.73
US$375,498 		65,532 -44.8% 5.73 US$375,498
2021-06-03 2021-06-02 S Sale
2.8
Wright Christopher W

VP, Gen. Counsel & Secy

Officer
21,746 -12.9%
6.96
US$151,352 		21,746 -12.9% 6.96 US$151,352
2021-05-19 2021-05-18 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
66,134 +28.1%
5.65
US$373,657 		66,134 +28.1% 5.65 US$373,657
2021-05-19 2021-05-17 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
6,200 +31.0%
5.09
US$31,558 		6,200 +31.0% 5.09 US$31,558
2021-05-19 2021-05-17 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
7,325 +3.2%
5.11
US$37,431 		7,325 +3.2% 5.11 US$37,431
2021-03-18 2021-03-17 S Sale
2.4
Jones William L
Non-Executive Director
20,000 -11.1%
5.98
US$119,600 		20,000 -11.1% 5.98 US$119,600
2021-03-17 2021-03-15 S Sale
3.4
Sneed James R

CCO and VP

Officer
100,000 -36.5%
6.01
US$601,000 		100,000 -36.5% 6.01 US$601,000
2020-12-01 2020-12-01 S Sale
2.8
Wright Christopher W

VP, Gen. Counsel & Secy

Officer
37,179 -22.1%
6.02
US$223,632 		37,179 -22.1% 6.02 US$223,632
2020-08-27 2020-08-27 B Purchase
3.7
McGregor Bryon T

Chief Financial Officer

Officer
5,000 +1.8%
3.55
US$17,750 		5,000 +1.8% 3.55 US$17,750
2020-08-27 2020-08-26 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
3,811 +23.5%
3.53
US$13,452 		3,811 +23.5% 3.53 US$13,452
2020-08-27 2020-08-26 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
16,089 +16089.0%
3.53
US$56,794 		16,089 +16089.0% 3.53 US$56,794
2020-08-27 2020-08-26 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
100 +inf%
3.53
US$352 		100 +inf% 3.53 US$352
2020-08-27 2020-08-26 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
5,300 +2.7%
3.53
US$18,699 		5,300 +2.7% 3.53 US$18,699
2020-08-27 2020-08-26 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
5,000 +2.6%
3.32
US$16,600 		5,000 +2.6% 3.32 US$16,600
2020-08-27 2020-08-26 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
7,083 +3.9%
3.31
US$23,445 		7,083 +3.9% 3.31 US$23,445
2020-08-27 2020-08-26 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
100 +0.1%
3.30
US$330 		100 +0.1% 3.30 US$330
2020-08-27 2020-08-26 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
12,817 +7.6%
3.30
US$42,296 		12,817 +7.6% 3.30 US$42,296
2020-08-27 2020-08-26 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
2,500 +1.5%
3.37
US$8,425 		2,500 +1.5% 3.37 US$8,425
2020-08-27 2020-08-26 B Purchase
3.8
KOEHLER NEIL M

Co-President & Co-CEO

Executive Director
33,789 +3.8%
3.36
US$113,531 		33,789 +3.8% 3.36 US$113,531
2020-08-27 2020-08-26 B Purchase
3.8
KOEHLER NEIL M

Co-President & Co-CEO

Executive Director
2 +0.0%
3.36
US$7 		2 +0.0% 3.36 US$7
2020-08-27 2020-08-26 B Purchase
3.8
KOEHLER NEIL M

Co-President & Co-CEO

Executive Director
9,216 +1.0%
3.35
US$30,874 		9,216 +1.0% 3.35 US$30,874
2020-08-27 2020-08-26 B Purchase
3.8
KOEHLER NEIL M

Co-President & Co-CEO

Executive Director
6,258 +0.7%
3.34
US$20,902 		6,258 +0.7% 3.34 US$20,902
2020-08-27 2020-08-26 B Purchase
3.8
KOEHLER NEIL M

Co-President & Co-CEO

Executive Director
735 +0.1%
3.30
US$2,426 		735 +0.1% 3.30 US$2,426
2020-08-27 2020-08-26 B Purchase
3.7
McGregor Bryon T

Chief Financial Officer

Officer
5,000 +1.8%
3.30
US$16,500 		5,000 +1.8% 3.30 US$16,500
2020-08-27 2020-08-25 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
4,400 +2.7%
4.00
US$17,600 		4,400 +2.7% 4.00 US$17,600
2020-08-27 2020-08-25 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
100 +0.1%
4.00
US$400 		100 +0.1% 4.00 US$400
2020-08-27 2020-08-25 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
3,000 +1.9%
3.99
US$11,970 		3,000 +1.9% 3.99 US$11,970
2020-08-27 2020-08-25 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
2,500 +1.6%
4.02
US$10,050 		2,500 +1.6% 4.02 US$10,050
2020-08-27 2020-08-24 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
10,000 +6.8%
3.83
US$38,300 		10,000 +6.8% 3.83 US$38,300
2020-08-20 2020-08-18 S Sale
2.8
Wright Christopher W

VP, Gen. Counsel & Secy

Officer
82,869 -33.0%
5.00
US$414,345 		82,869 -33.0% 5.00 US$414,345
2020-08-20 2020-08-18 B Purchase
3.1
Kieta Douglas L
Non-Executive Director
980 +0.7%
5.08
US$4,974 		980 +0.7% 5.08 US$4,974
2020-08-17 2020-08-14 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
50,000 +51.8%
3.42
US$171,245 		50,000 +51.8% 3.42 US$171,245
2020-08-17 2020-08-13 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
725 +0.8%
3.22
US$2,334 		725 +0.8% 3.22 US$2,334
2020-08-17 2020-08-13 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
3,000 +3.2%
3.22
US$9,660 		3,000 +3.2% 3.22 US$9,660
2020-08-17 2020-08-13 B Purchase
4.0
NATHAN GILBERT E
Non-Executive Director
3,000 +3.3%
3.18
US$9,540 		3,000 +3.3% 3.18 US$9,540
2020-06-16 2020-06-12 B Purchase
3.4
Sneed James R

VP, Supply & Trading

Officer
1,278 +0.7%
0.84
US$1,068 		1,278 +0.7% 0.84 US$1,068
2020-06-16 2020-06-12 B Purchase
3.4
Sneed James R

VP, Supply & Trading

Officer
3,976 +2.2%
0.82
US$3,260 		3,976 +2.2% 0.82 US$3,260
2020-06-16 2020-06-12 B Purchase
3.4
Sneed James R

VP, Supply & Trading

Officer
13,500 +7.9%
0.82
US$11,069 		13,500 +7.9% 0.82 US$11,069
2020-06-16 2020-06-12 B Purchase
3.4
Sneed James R

VP, Supply & Trading

Officer
411 +0.2%
0.82
US$337 		411 +0.2% 0.82 US$337
2020-06-16 2020-06-12 B Purchase
3.4
Sneed James R

VP, Supply & Trading

Officer
200 +0.1%
0.82
US$164 		200 +0.1% 0.82 US$164
2020-06-16 2020-06-12 B Purchase
3.4
Sneed James R

VP, Supply & Trading

Officer
1,000 +0.6%
0.82
US$819 		1,000 +0.6% 0.82 US$819
2020-06-16 2020-06-12 B Purchase
3.4
Sneed James R

VP, Supply & Trading

Officer
400 +0.2%
0.82
US$326 		400 +0.2% 0.82 US$326
2020-07-09 2020-06-11 B Purchase
3.8
KOEHLER NEIL M

Co-President & Co-CEO

Executive Director
1,883 +0.2%
0.67
US$1,262 		1,883 +0.2% 0.67 US$1,262
2019-08-22 2019-08-22 B Purchase KOEHLER NEIL M

President & CEO

Executive Director
100,000 +12.0%
0.57
US$57,000 		100,000 +12.0% 0.57 US$57,000
2019-06-07 2019-06-05 B Purchase
3.4
Sneed James R

VP, Supply & Trading
13,299 +8.4%
0.95
US$12,634 		13,299 +8.4% 0.95 US$12,634
2018-03-19 2018-03-16 B Purchase McGregor Bryon T

Chief Financial Officer
2,500 +2.1%
3.55
US$8,875 		2,500 +2.1% 3.55 US$8,875
2018-03-12 2018-03-09 B Purchase Kandris Michael D

Chief Operating Officer

Executive Director
3,000 +3.0%
3.25
US$9,750 		3,000 +3.0% 3.25 US$9,750
2018-03-09 2018-03-08 B Purchase Koehler Paul

VP, Commodities & Corp Dev
6,500 +7.3%
3.20
US$20,800 		6,500 +7.3% 3.20 US$20,800
2018-03-09 2018-03-08 B Purchase KOEHLER NEIL M

President & CEO

Executive Director
30,000 +5.7%
3.20
US$95,895 		30,000 +5.7% 3.20 US$95,895
2018-03-07 2018-03-06 B Purchase Layne Larry D Non-Executive Director
10,000 +21.4%
3.70
US$36,950 		10,000 +21.4% 3.70 US$36,950
2017-12-08 2017-12-07 S Sale Jones William L
20,000 -26.0%
4.30
US$86,000 		20,000 -26.0% 4.30 US$86,000
Explore more

More insider trading research around Alto Ingredients 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