United States Renewable Energy

Alto Ingredients Inc (ALTO)

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Over the past 90 days, Alto Ingredients Inc. recorded two insider transactions, both consisting of share purchases by Nathan Gilbert E. totaling $114,450. These acquisitions occurred shortly after the company's May 2026 earnings report, which showed an EPS miss. No insider selling activity was reported during this period.
Ticker: ALTO 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 Alto Ingredients Inc. Upgrade to see score, net flow, insiders and the full signal context.

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Top insiders
Trades
Buy 13 May 2026
Value US$4,615,999.42 | Price 236.17 | Shares 23,431 (-10.9%)
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
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