Steel Dynamics STLD Insider Ownership

Updated Oct 11, 2026

Over the trailing 12 months, STLD insiders sold $8.91 million worth of shares (39.38K shares) in open-market trades, with no open-market purchases.

• A count shows 5 insiders selling STLD stock on the open market over the past 12 months and none buying.
• The largest open-market sales of STLD in the past 12 months were by James Stanley Anderson (Senior Vice President), totaling $2.69 million (10K shares), most recently on June 5, 2026.
• Away from the open market, STLD insiders received 172.71K shares in stock awards, gave up 92.88K shares to cover taxes or exercise prices and gave away 2.5K shares as gifts over the last 12 months.
• According to Business Quant data, insiders at Steel Dynamics reported 9.64Mn shares in total in their latest Form 4 filings, unchanged from 9.64Mn shares at the end of Q2 2026 and down 0.37% from 9.68Mn shares at the end of Q3 2025.
• By type of ownership, STLD insiders hold 99.03% of their shares directly (9.55Mn shares) and 0.97% indirectly (93.12K shares).
• Business Quant counts 19 insiders with holdings in Steel Dynamics stock, among the officers, directors and 10% owners who have filed a Form 4 in the past two years.
• Steel Dynamics' top three insider holders by shares held are Richard P. Teets Jr. (Director, 5.07Mn shares), Mark D. Millett (Chairman and CEO, 3.02Mn shares) and Theresa E. Wagler (Executive Vice President & CFO, 495.04K shares).
• Richard P. Teets Jr. alone accounts for 52.61% of the shares held by Steel Dynamics insiders.
• Institutions owned 82.72% of STLD shares as of Q2 2026; insiders' latest Form 4 filings account for about 6.70%, leaving roughly 10.58% with other investors, including the public.
• Over the trailing 12 months, 18 insiders reported transactions in STLD stock across 100 Form 4 filings.
• This summary of Steel Dynamics insider activity covers Form 4 filings through October 9, 2026.