Teekay Tankers TNK Insider Ownership

Updated Oct 10, 2026

Over the past year, TNK insiders sold $1.88 million of stock (21.59K shares) on the open market and bought none.

• Counted by insider, open-market selling of TNK stock in the past 12 months came from 3 insiders, with no insider buying.
• David Schellenberg (Director) was the top open-market seller of Teekay Tankers over the past 12 months, with $1.25 million sold (14.48K shares) and the latest sale on September 16, 2026.
• Away from the open market, TNK insiders received 1.88K shares in stock awards, acquired 16.6K shares through option exercises and conversions and gave up 3.72K shares to cover taxes or exercise prices over the last 12 months.
• Business Quant data shows Teekay Tankers insiders holding 38.07K shares in total in their latest Form 4 filings, down 27.66% from 52.63K shares at the end of Q2 2026.
• By type of ownership, TNK insiders hold all of their 38.07K shares directly.
• Holdings in Teekay Tankers stock are reported by 7 insiders, the officers, directors and 10% owners who have filed a Form 4 in the past two years.
• Teekay Tankers' top three insider holders by shares held are Poul Ulrich Karlshoej (Director, 9.74K shares), Mikkel Seidelin (Chief Commercial Officer, 8.26K shares) and Alan Semple (Director, 8.02K shares).
• The largest insider, Poul Ulrich Karlshoej, holds 25.59% of TNK's insider total.
• Institutions held 57.16% of Teekay Tankers' outstanding shares in their Q2 2026 13F filings, insiders about 0.11% based on their latest Form 4 filings, and other investors, including the public, the remaining 42.73%.
• A total of 29 Form 4 filings with transactions in Teekay Tankers stock were made over the past 12 months, by 10 insiders.
• This summary of Teekay Tankers insider activity covers Form 4 filings through September 16, 2026.