Massivemarkets

SEC Form 4

Viking Therapeutics, Inc (VKTX) insider trading

In the 12 months to Oct 23, 2026, 5 VKTX insiders reported open-market sales of $22.3M across 11 filings; one chief commercial officer bought $149.9K.

Latest filing · Last 12 months · Source: SEC EDGAR · How we count

Open-market sales
$22.3M
11 filings · 5 insiders
Open-market purchases
$149.9K
1 filing · Neil William Aubuchon, Chief Commercial Officer

Who traded VKTX, and when

  • Purchase
  • Sale

VKTX daily close from Oct 23, 2025 to Oct 23, 2026, between $24.40 and $42.13, last $24.40. 11 sale and 1 purchase filings by 6 insiders, marked at their filing dates. Brian Lian, President & CEO: sold $14.0M across 3 filings, first filed Oct 28, 2025, last Jul 29, 2026. Greg Zante, Chief Financial Officer: sold $2.8M across 3 filings, first filed Oct 28, 2025, last Jul 29, 2026. Marianna Mancini, Chief Operating Officer: sold $2.7M across 3 filings, first filed Oct 28, 2025, last Jul 29, 2026. Charles A. Rowland Jr., Director: sold $2.1M across 1 filing, first filed Oct 28, 2025, last Oct 28, 2025. Matthew W. Foehr, Director: sold $561.7K across 1 filing, first filed Jan 5, 2026, last Jan 5, 2026. Neil William Aubuchon, Chief Commercial Officer: bought $149.9K across 1 filing, first filed Mar 10, 2026, last Mar 10, 2026.

Largest mark · tap a row for others

Brian Lian · President & CEO

Sale $7,692,121

233,409 shares at $32.96 avg

Filed Jan 5, 2026

Close on filing date $32.14

VKTX daily closelast $24.40

Brian Lian · President & CEO

$14.0M sold

Greg Zante · Chief Financial Officer

$2.8M sold

Marianna Mancini · Chief Operating Officer

$2.7M sold

Charles A. Rowland Jr. · Director

$2.1M sold

Matthew W. Foehr · Director

$561.7K sold

Neil William Aubuchon · Chief Commercial Officer

$149.9K bought
One row per insider; marks sit at the SEC filing date, sized by dollar value.

Has Viking Therapeutics, Inc's CEO sold stock?

Yes. Brian Lian (CEO) sold 420,915 shares ($14.0M) between Oct 2025 and Jul 2026.

Open-market trades

12 filings in the last 12 months
InsiderRoleSoldBoughtFilingsPre-arranged (10b5-1)Last filed
Brian LianPresident & CEO$14.0M—3—
Greg ZanteChief Financial Officer$2.8M—3—
Marianna ManciniChief Operating Officer$2.7M—3—
Charles A. Rowland Jr.Director$2.1M—1—
Matthew W. FoehrDirector$561.7K—1—
Neil William AubuchonChief Commercial Officer—$149.9K1—
Other insider activity (not market trades) · 22 records
  • Option exercises1 record
  • Grants and awards21 records

Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.

Build this yourself

This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:

Agent prompt

Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for VKTX every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.

How to read this page

Open-market purchase or sale
A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
Filing date
Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.