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United States Biotechnology & Medical Research

Viking Therapeutics Inc (VKTX)

Track

The most recent insider trading activity occurred on March 10, 2026, with a buy transaction by the Chief Commercial Officer. Prior to this, on January 5, 2026, there were multiple sell transactions by senior executives including the President & CEO, Chief Financial Officer, and Chief Operating Officer. Proposed sales were also noted on this date.
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Ticker: VKTX Exchange: NAS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings
Top insiders
Trades
Aubuchon Neil William
Chief Commercial Officer
1 purchase — total 149,913 USD
Buy 10 Mar 2026
Value US$3,028,175.37 | Price 109.22 | Shares 80,616
Proposed sale 5 Jan 2026
Value US$4,299,593.53 | Price 71.39 | Shares 60,347
Proposed sale 5 Jan 2026
Value US$1,901,469.50 | Price 32.98 | Shares 57,661
Proposed sale 5 Jan 2026
Value US$7,692,133.64 | Price 32.96 | Shares 233,409
Sale 5 Jan 2026
Value US$48,133.05 | Price 32.09 | Shares 1,500
Sale 5 Jan 2026
Value US$352,634.92 | Price 34.24 | Shares 10,300
Sale 5 Jan 2026
Value US$464,020.92 | Price 33.38 | Shares 13,900
Sale 5 Jan 2026
Value US$1,032,180.50 | Price 32.30 | Shares 31,961
Sale 5 Jan 2026
Value US$56,116.96 | Price 35.07 | Shares 1,600
Sale 5 Jan 2026
Value US$359,302.65 | Price 34.22 | Shares 10,500
Sale 5 Jan 2026
Value US$453,875.52 | Price 33.37 | Shares 13,600
Sale 5 Jan 2026
Value US$1,032,110.18 | Price 32.29 | Shares 31,961
Sale 5 Jan 2026
Value US$224,423.04 | Price 35.07 | Shares 6,400
Sale 5 Jan 2026
Value US$1,412,398.68 | Price 34.22 | Shares 41,276
Sale 5 Jan 2026
Value US$1,778,266.54 | Price 33.38 | Shares 53,279
Sale 5 Jan 2026
Value US$4,277,032.38 | Price 32.29 | Shares 132,454
Sale 2 Jan 2026
Value US$561,694.40 | Price 35.11 | Shares 16,000
Proposed sale 2 Jan 2026
Value US$561,694.40 | Price 35.11 | Shares 16,000
Proposed sale 28 Oct 2025
Value US$216,530.67 | Price 35.01 | Shares 6,185
Proposed sale 28 Oct 2025
Value US$216,491.70 | Price 35.00 | Shares 6,185
Proposed sale 28 Oct 2025
Value US$1,364,923.01 | Price 35.01 | Shares 38,989
Sale 28 Oct 2025
Value US$216,491.70 | Price 35.00 | Shares 6,185
Sale 28 Oct 2025
Value US$1,364,923.01 | Price 35.01 | Shares 38,989
Sale 28 Oct 2025
Value US$216,480.57 | Price 35.00 | Shares 6,185
Sale 27 Oct 2025
Value US$2,134,278.00 | Price 35.57 | Shares 60,000
Proposed sale 27 Oct 2025
Value US$2,134,278.00 | Price 35.57 | Shares 60,000
Proposed sale 3 Jul 2025
Value US$118,428.43 | Price 27.76 | Shares 4,266
Proposed sale 3 Jul 2025
Value US$118,472.79 | Price 27.77 | Shares 4,266
Proposed sale 3 Jul 2025
Value US$747,632.51 | Price 27.80 | Shares 26,889
Sale 3 Jul 2025
Value US$118,472.79 | Price 27.77 | Shares 4,266
Sale 3 Jul 2025
Value US$118,428.43 | Price 27.76 | Shares 4,266
Sale 3 Jul 2025
Value US$747,632.51 | Price 27.80 | Shares 26,889
Buy 31 Mar 2025
Value US$29,942.78 | Price 24.15 | Shares 1,240
Proposed sale 6 Jan 2025
Value US$2,150,594.00 | Price 42.75 | Shares 50,309
Proposed sale 6 Jan 2025
Value US$2,317,599.08 | Price 42.75 | Shares 54,215
Proposed sale 6 Jan 2025
Value US$8,313,611.19 | Price 42.75 | Shares 194,490
Sale 6 Jan 2025
Value US$203,601.18 | Price 43.32 | Shares 4,700
Sale 6 Jan 2025
Value US$1,946,993.48 | Price 42.69 | Shares 45,609
Sale 6 Jan 2025
Value US$823,021.10 | Price 43.32 | Shares 19,000
Sale 6 Jan 2025
Value US$7,490,580.06 | Price 42.68 | Shares 175,490
Sale 6 Jan 2025
Value US$220,914.15 | Price 43.32 | Shares 5,100
Sale 6 Jan 2025
Value US$2,096,684.97 | Price 42.69 | Shares 49,115
Proposed sale 8 Nov 2024
Value US$137,333.40 | Price 68.67 | Shares 2,000
Sale 8 Nov 2024
Value US$137,333.40 | Price 68.67 | Shares 2,000
Proposed sale 28 Oct 2024
Value US$10,275,536.61 | Price 78.03 | Shares 131,687
Planned sale 28 Oct 2024
Value US$98,222.31 | Price 81.44 | Shares 1,206
Planned sale 28 Oct 2024
Value US$642,544.92 | Price 80.65 | Shares 7,967
Planned sale 28 Oct 2024
Value US$482,664.76 | Price 79.78 | Shares 6,050
Planned sale 28 Oct 2024
Value US$1,245,280.33 | Price 78.69 | Shares 15,825
Planned sale 28 Oct 2024
Value US$1,793,018.99 | Price 77.68 | Shares 23,082
Planned sale 28 Oct 2024
Value US$712,802.78 | Price 76.94 | Shares 9,265
Planned sale 28 Oct 2024
Value US$1,411,135.32 | Price 75.79 | Shares 18,620
Planned sale 28 Oct 2024
Value US$3,703,494.65 | Price 74.56 | Shares 49,672
Proposed sale 25 Oct 2024
Value US$889,430.00 | Price 80.86 | Shares 11,000
Planned sale 25 Oct 2024
Value US$889,790.00 | Price 80.89 | Shares 11,000
Proposed sale 25 Oct 2024
Value US$1,271,479.00 | Price 79.47 | Shares 16,000
Planned sale 25 Oct 2024
Value US$1,272,000.00 | Price 79.50 | Shares 16,000
Proposed sale 20 Sep 2024
Value US$3,978,372.00 | Price 18.41 | Shares 216,130
Planned sale 20 Sep 2024
Value US$14,397.00 | Price 71.99 | Shares 200
Planned sale 20 Sep 2024
Value US$8,529,047.09 | Price 71.15 | Shares 119,874
Planned sale 20 Sep 2024
Value US$6,765,108.81 | Price 70.43 | Shares 96,056
Proposed sale 20 Sep 2024
Value US$715,850.00 | Price 69.50 | Shares 10,300
Planned sale 20 Sep 2024
Value US$715,850.00 | Price 69.50 | Shares 10,300
Planned sale 21 Aug 2024
Value US$397,430.22 | Price 69.72 | Shares 5,700
Proposed sale 21 Aug 2024
Value US$397,404.00 | Price 69.72 | Shares 5,700
Planned sale 21 Aug 2024
Value US$69,900.00 | Price 69.90 | Shares 1,000
Proposed sale 21 Aug 2024
Value US$69,900.00 | Price 69.90 | Shares 1,000
Proposed sale 19 Aug 2024
Value US$7,425,717.00 | Price 65.79 | Shares 112,870
Proposed sale 19 Aug 2024
Value US$995,360.00 | Price 62.21 | Shares 16,000
Planned sale 19 Aug 2024
Value US$97,384.58 | Price 64.88 | Shares 1,501
Planned sale 19 Aug 2024
Value US$153,079.64 | Price 64.10 | Shares 2,388
Planned sale 19 Aug 2024
Value US$129,775.10 | Price 63.15 | Shares 2,055
Planned sale 19 Aug 2024
Value US$278,931.25 | Price 61.86 | Shares 4,509
Planned sale 19 Aug 2024
Value US$186,248.18 | Price 61.13 | Shares 3,047
Planned sale 19 Aug 2024
Value US$150,034.50 | Price 60.01 | Shares 2,500
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
2026-03-10 2026-03-10 B Purchase
Aubuchon Neil William

Chief Commercial Officer

Officer
80,616 +0.9%
109.22
US$3,028,175 		80,616 +0.9% 109.22 US$3,028,175
2026-01-05 2026-01-05 PrS Proposed sale
3.7
MARIANNA MANCINI

Officer

Officer
60,347
71.39
US$4,299,594 		60,347 71.39 US$4,299,594
2026-01-05 2026-01-05 PrS Proposed sale
3.4
GREG ZANTE

Officer

Officer
21,881
66.27
US$4,539,171 		21,881 66.27 US$4,539,171
2026-01-05 2026-01-05 PrS Proposed sale
3.6
BRIAN LIAN

Officer

Officer
233,409
32.96
US$7,692,134 		233,409 32.96 US$7,692,134
2026-01-05 2026-01-05 S Sale
3.4
ZANTE GREG

Chief Financial Officer

Officer
1,500 -0.8%
32.09
US$48,133 		1,500 -0.8% 32.09 US$48,133
2026-01-05 2026-01-05 S Sale
3.4
ZANTE GREG

Chief Financial Officer

Officer
10,300 -5.1%
34.24
US$352,635 		10,300 -5.1% 34.24 US$352,635
2026-01-05 2026-01-05 S Sale
3.4
ZANTE GREG

Chief Financial Officer

Officer
13,900 -6.4%
33.38
US$464,021 		13,900 -6.4% 33.38 US$464,021
2026-01-05 2026-01-05 S Sale
3.4
ZANTE GREG

Chief Financial Officer

Officer
31,961 -12.9%
32.30
US$1,032,180 		31,961 -12.9% 32.30 US$1,032,180
2026-01-05 2026-01-05 S Sale
3.7
Mancini Marianna

Chief Operating Officer

Officer
1,600 -0.4%
35.07
US$56,117 		1,600 -0.4% 35.07 US$56,117
2026-01-05 2026-01-05 S Sale
3.7
Mancini Marianna

Chief Operating Officer

Officer
10,500 -2.5%
34.22
US$359,303 		10,500 -2.5% 34.22 US$359,303
2026-01-05 2026-01-05 S Sale
3.7
Mancini Marianna

Chief Operating Officer

Officer
13,600 -3.1%
33.37
US$453,876 		13,600 -3.1% 33.37 US$453,876
2026-01-05 2026-01-05 S Sale
3.7
Mancini Marianna

Chief Operating Officer

Officer
31,961 -6.8%
32.29
US$1,032,110 		31,961 -6.8% 32.29 US$1,032,110
2026-01-05 2026-01-05 S Sale
3.6
Lian Brian

President & CEO

Executive Director
6,400 -0.3%
35.07
US$224,423 		6,400 -0.3% 35.07 US$224,423
2026-01-05 2026-01-05 S Sale
3.6
Lian Brian

President & CEO

Executive Director
41,276 -1.6%
34.22
US$1,412,399 		41,276 -1.6% 34.22 US$1,412,399
2026-01-05 2026-01-05 S Sale
3.6
Lian Brian

President & CEO

Executive Director
53,279 -2.0%
33.38
US$1,778,267 		53,279 -2.0% 33.38 US$1,778,267
2026-01-05 2026-01-05 S Sale
3.6
Lian Brian

President & CEO

Executive Director
132,454 -4.8%
32.29
US$4,277,032 		132,454 -4.8% 32.29 US$4,277,032
2026-01-05 2026-01-02 S Sale
3.6
FOEHR MATTHEW W
Non-Executive Director
16,000 -10.8%
35.11
US$561,694 		16,000 -10.8% 35.11 US$561,694
2026-01-02 2026-01-02 PrS Proposed sale
3.6
MATTHEW W. FOEHR

Director

Non-Executive Director
16,000
35.11
US$561,694 		16,000 35.11 US$561,694
2025-10-28 2025-10-28 PrS Proposed sale
3.4
GREG ZANTE

Officer

Officer
6,185
35.01
US$216,531 		6,185 35.01 US$216,531
2025-10-28 2025-10-28 PrS Proposed sale
3.7
MARIANNA MANCINI

Officer

Officer
6,185
35.00
US$216,492 		6,185 35.00 US$216,492
2025-10-28 2025-10-28 PrS Proposed sale
3.6
BRIAN LIAN

Officer

Officer
38,989
35.01
US$1,364,923 		38,989 35.01 US$1,364,923
2025-10-28 2025-10-28 S Sale
3.7
Mancini Marianna

Chief Operating Officer

Officer
6,185 -1.6%
35.00
US$216,492 		6,185 -1.6% 35.00 US$216,492
2025-10-28 2025-10-28 S Sale
3.6
Lian Brian

President & CEO

Executive Director
38,989 -1.6%
35.01
US$1,364,923 		38,989 -1.6% 35.01 US$1,364,923
2025-10-28 2025-10-28 S Sale
3.4
ZANTE GREG

Chief Financial Officer

Officer
6,185 -3.4%
35.00
US$216,481 		6,185 -3.4% 35.00 US$216,481
2025-10-28 2025-10-27 S Sale
3.8
Rowland Charles A Jr
Non-Executive Director
60,000 -66.7%
35.57
US$2,134,278 		60,000 -66.7% 35.57 US$2,134,278
2025-10-27 2025-10-27 PrS Proposed sale
3.8
CHARLES A ROWLAND JR.

Director

Non-Executive Director
60,000
35.57
US$2,134,278 		60,000 35.57 US$2,134,278
2025-07-03 2025-07-03 PrS Proposed sale
3.4
GREG ZANTE

Officer

Officer
4,266
27.76
US$118,428 		4,266 27.76 US$118,428
2025-07-03 2025-07-03 PrS Proposed sale
3.7
MARIANNA MANCINI

Officer

Officer
4,266
27.77
US$118,473 		4,266 27.77 US$118,473
2025-07-03 2025-07-03 PrS Proposed sale
3.6
BRIAN LIAN

Officer

Officer
26,889
27.80
US$747,633 		26,889 27.80 US$747,633
2025-07-03 2025-07-03 S Sale
3.7
Mancini Marianna

Chief Operating Officer

Officer
4,266 -1.1%
27.77
US$118,473 		4,266 -1.1% 27.77 US$118,473
2025-07-03 2025-07-03 S Sale
3.4
ZANTE GREG

Chief Financial Officer

Officer
4,266 -2.5%
27.76
US$118,428 		4,266 -2.5% 27.76 US$118,428
2025-07-03 2025-07-03 S Sale
3.6
Lian Brian

President & CEO

Executive Director
26,889 -1.1%
27.80
US$747,633 		26,889 -1.1% 27.80 US$747,633
2025-04-02 2025-03-31 B Purchase
3.2
Rouan Sarah Kathryn
Non-Executive Director
1,240 +inf%
24.15
US$29,943 		1,240 +inf% 24.15 US$29,943
2025-01-06 2025-01-06 PrS Proposed sale
3.4
GREG ZANTE

Officer

Officer
50,309
42.75
US$2,150,594 		50,309 42.75 US$2,150,594
2025-01-06 2025-01-06 PrS Proposed sale
3.7
MARIANNA MANCINI

Officer

Officer
54,215
42.75
US$2,317,599 		54,215 42.75 US$2,317,599
2025-01-06 2025-01-06 PrS Proposed sale
3.6
BRIAN LIAN

Officer

Officer
194,490
42.75
US$8,313,611 		194,490 42.75 US$8,313,611
2025-01-06 2025-01-06 S Sale
3.4
ZANTE GREG

Chief Financial Officer

Officer
4,700 -2.8%
43.32
US$203,601 		4,700 -2.8% 43.32 US$203,601
2025-01-06 2025-01-06 S Sale
3.4
ZANTE GREG

Chief Financial Officer

Officer
45,609 -21.2%
42.69
US$1,946,993 		45,609 -21.2% 42.69 US$1,946,993
2025-01-06 2025-01-06 S Sale
3.6
Lian Brian

President & CEO

Executive Director
19,000 -0.8%
43.32
US$823,021 		19,000 -0.8% 43.32 US$823,021
2025-01-06 2025-01-06 S Sale
3.6
Lian Brian

President & CEO

Executive Director
175,490 -6.9%
42.68
US$7,490,580 		175,490 -6.9% 42.68 US$7,490,580
2025-01-06 2025-01-06 S Sale
3.7
Mancini Marianna

Chief Operating Officer

Officer
5,100 -1.3%
43.32
US$220,914 		5,100 -1.3% 43.32 US$220,914
2025-01-06 2025-01-06 S Sale
3.7
Mancini Marianna

Chief Operating Officer

Officer
49,115 -11.5%
42.69
US$2,096,685 		49,115 -11.5% 42.69 US$2,096,685
2024-11-08 2024-11-08 PrS Proposed sale
3.3
LAWSON MACARTNEY

Director

Non-Executive Director
2,000
68.67
US$137,333 		2,000 68.67 US$137,333
2024-11-08 2024-11-08 S Sale
3.3
MACARTNEY LAWSON
Non-Executive Director
2,000 -4.0%
68.67
US$137,333 		2,000 -4.0% 68.67 US$137,333
2024-10-28 2024-10-28 PrS Proposed sale
3.4
GREG ZANTE

Officer

Officer
131,687
78.03
US$10,275,537 		131,687 78.03 US$10,275,537
2024-10-28 2024-10-28 PlS Planned sale
3.4
ZANTE GREG

Chief Financial Officer

Officer
1,206 -0.8%
81.44
US$98,222 		1,206 -0.8% 81.44 US$98,222
2024-10-28 2024-10-28 PlS Planned sale
3.4
ZANTE GREG

Chief Financial Officer

Officer
7,967 -5.0%
80.65
US$642,545 		7,967 -5.0% 80.65 US$642,545
2024-10-28 2024-10-28 PlS Planned sale
3.4
ZANTE GREG

Chief Financial Officer

Officer
6,050 -3.7%
79.78
US$482,665 		6,050 -3.7% 79.78 US$482,665
2024-10-28 2024-10-28 PlS Planned sale
3.4
ZANTE GREG

Chief Financial Officer

Officer
15,825 -8.8%
78.69
US$1,245,280 		15,825 -8.8% 78.69 US$1,245,280
2024-10-28 2024-10-28 PlS Planned sale
3.4
ZANTE GREG

Chief Financial Officer

Officer
23,082 -11.3%
77.68
US$1,793,019 		23,082 -11.3% 77.68 US$1,793,019
2024-10-28 2024-10-28 PlS Planned sale
3.4
ZANTE GREG

Chief Financial Officer

Officer
9,265 -4.4%
76.94
US$712,803 		9,265 -4.4% 76.94 US$712,803
2024-10-28 2024-10-28 PlS Planned sale
3.4
ZANTE GREG

Chief Financial Officer

Officer
18,620 -8.0%
75.79
US$1,411,135 		18,620 -8.0% 75.79 US$1,411,135
2024-10-28 2024-10-28 PlS Planned sale
3.4
ZANTE GREG

Chief Financial Officer

Officer
49,672 -17.7%
74.56
US$3,703,495 		49,672 -17.7% 74.56 US$3,703,495
2024-10-25 2024-10-25 PrS Proposed sale
3.2
Rouan Sarah Kathryn

Director

Non-Executive Director
11,000
80.86
US$889,430 		11,000 80.86 US$889,430
2024-10-25 2024-10-25 PrS Proposed sale
SINGLETON J MATTHEW

Director

Non-Executive Director
16,000
79.47
US$1,271,479 		16,000 79.47 US$1,271,479
2024-10-25 2024-10-25 PlS Planned sale
3.2
Rouan Sarah Kathryn
Non-Executive Director
11,000 -100.0%
80.89
US$889,790 		11,000 -100.0% 80.89 US$889,790
2024-10-25 2024-10-25 PlS Planned sale
SINGLETON J MATTHEW
Non-Executive Director
16,000 -62.7%
79.50
US$1,272,000 		16,000 -62.7% 79.50 US$1,272,000
2024-09-20 2024-09-20 PrS Proposed sale
3.6
Lian Brian

Officer

Officer
216,130
18.41
US$3,978,372 		216,130 18.41 US$3,978,372
2024-09-20 2024-09-20 PrS Proposed sale
SINGLETON J MATTHEW

Director

Non-Executive Director
10,300
69.50
US$715,850 		10,300 69.50 US$715,850
2024-09-20 2024-09-20 PlS Planned sale
3.6
Lian Brian

President & CEO

Executive Director
200 -0.0%
71.99
US$14,397 		200 -0.0% 71.99 US$14,397
2024-09-20 2024-09-20 PlS Planned sale
3.6
Lian Brian

President & CEO

Executive Director
119,874 -4.9%
71.15
US$8,529,047 		119,874 -4.9% 71.15 US$8,529,047
2024-09-20 2024-09-20 PlS Planned sale
3.6
Lian Brian

President & CEO

Executive Director
96,056 -3.8%
70.43
US$6,765,109 		96,056 -3.8% 70.43 US$6,765,109
2024-09-20 2024-09-20 PlS Planned sale
SINGLETON J MATTHEW
Non-Executive Director
10,300 -52.0%
69.50
US$715,850 		10,300 -52.0% 69.50 US$715,850
2024-08-22 2024-08-21 PlS Planned sale
SINGLETON J MATTHEW
Non-Executive Director
5,700 -37.5%
69.72
US$397,430 		5,700 -37.5% 69.72 US$397,430
2024-08-22 2024-08-21 PlS Planned sale
3.6
Lian Brian

President & CEO

Executive Director
1,000 -0.0%
69.90
US$69,900 		1,000 -0.0% 69.90 US$69,900
2024-08-21 2024-08-21 PrS Proposed sale
3.6
Lian Brian

Officer

Officer
1,000
69.90
US$69,900 		1,000 69.90 US$69,900
2024-08-21 2024-08-21 PrS Proposed sale
SINGLETON J MATTHEW

Director

Non-Executive Director
5,700
69.72
US$397,404 		5,700 69.72 US$397,404
2024-08-19 2024-08-19 PrS Proposed sale
3.6
Lian Brian

Officer

Officer
112,870
65.79
US$7,425,717 		112,870 65.79 US$7,425,717
2024-08-19 2024-08-19 PrS Proposed sale
SINGLETON J MATTHEW

Director

Non-Executive Director
16,000
62.21
US$995,360 		16,000 62.21 US$995,360
2024-08-19 2024-08-19 PlS Planned sale
SINGLETON J MATTHEW
Non-Executive Director
1,501 -13.6%
64.88
US$97,385 		1,501 -13.6% 64.88 US$97,385
2024-08-19 2024-08-19 PlS Planned sale
SINGLETON J MATTHEW
Non-Executive Director
2,388 -17.8%
64.10
US$153,080 		2,388 -17.8% 64.10 US$153,080
2024-08-19 2024-08-19 PlS Planned sale
SINGLETON J MATTHEW
Non-Executive Director
2,055 -13.3%
63.15
US$129,775 		2,055 -13.3% 63.15 US$129,775
2024-08-19 2024-08-19 PlS Planned sale
SINGLETON J MATTHEW
Non-Executive Director
4,509 -22.6%
61.86
US$278,931 		4,509 -22.6% 61.86 US$278,931
2024-08-19 2024-08-19 PlS Planned sale
SINGLETON J MATTHEW
Non-Executive Director
3,047 -13.2%
61.13
US$186,248 		3,047 -13.2% 61.13 US$186,248
2024-08-19 2024-08-19 PlS Planned sale
SINGLETON J MATTHEW
Non-Executive Director
2,500 -9.8%
60.01
US$150,034 		2,500 -9.8% 60.01 US$150,034
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