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TISI on NYSE. Market value $130m.

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Who owns it

None of the long-term investors we follow own it. 27 funds in all.

Jun '25
Dec '25
Jun '26
Largest holders overall

From 13F filings for the quarter ended 30 June 2026.

Big holders and activists

4 investors own more than 5%.

  • Corre Partners Advisors, LLC
    Passive investor
    at least 35.3%
    (filed with 2 related holders)
    Since 11 September 2025
  • InspectionTech Holdings LP
    at least 35.1%
    (filed with 5 related holders)
    Since 6 August 2026
    What they said

    General The Reporting Persons acquired the securities described in this Schedule 13D for investment purposes, and they intend to review their investments in the Issuer on a continuing basis. Any actions the Reporting Persons might undertake will be dependent upon the Reporting…

    Read the filing
  • Barclays PLC
    Passive investor
    6.9%+1.4 pts
    Since 31 December 2025
  • Corre Opportunities Qualified Master Fund, LP
    at least 5.0%−18.1 pts
    (filed with 4 related holders)
    Since 6 August 2026
    What they said

    On August 6, 2026, Corre Opportunities Qualified Master Fund, LP, Corre Horizon Fund, LP and Corre Horizon II Fund, LP, each an existing shareholder of the Issuer, along with Corre Partners Management, LLC ("Corre"), which has been delegated investment authority over the assets…

    Read the filing

From Schedule 13D and 13G filings: anyone owning more than 5% must file one.

What insiders did

In the last 12 months, 7 insiders bought $1m of shares on the open market. 1 sold $23,395.

Cluster buy5 insiders bought within 30 days (6 August 2026 to 3 September 2026).
  • Roeder Clinton William
    Chief Financial Officer
    Bought
    Date
    3 September 2026
    Shares
    8,000
    Price
    $27.59
    Value
    $220,720
  • Horton Anthony R
    Director
    Bought
    Date
    24 August 2026
    Shares
    2,000
    Price
    $22.90
    Value
    $45,800
  • Roeder Clinton William
    Chief Financial Officer
    Bought
    Date
    21 August 2026
    Shares
    9,000
    Price
    $22.89
    Value
    $206,040
  • Horton Anthony R
    Director
    Bought
    Date
    21 August 2026
    Shares
    2,000
    Price
    $23.15
    Value
    $46,300
  • Horton Anthony R
    Director
    Bought
    Date
    18 August 2026
    Shares
    2,000
    Price
    $22.71
    Value
    $45,420
  • Lederman Evan S.
    Director
    Bought
    Date
    17 August 2026
    Shares
    500
    Price
    $23.00
    Value
    $11,500
  • McGinnis Pamela J.
    Director
    Bought
    Date
    13 August 2026
    Shares
    2,000
    Price
    $22.90
    Value
    $45,800
  • Stewart Michael David
    Director
    Bought
    Date
    6 August 2026
    Shares
    1,604,326
    Price
    n/a
    Value
    n/a
  • Hill Gary L.
    Chief Executive Officer
    Bought
    Date
    1 June 2026
    Shares
    6,250
    Price
    $16.00
    Value
    $100,000
  • Hill Gary L.
    Chief Executive Officer
    Bought
    Date
    20 May 2026
    Shares
    5,800
    Price
    $16.22
    Value
    $94,076

From Form 4 filings: insiders must report trades in their own company's shares within two days.

The deep dive

Everything above is arithmetic on public filings. The deep dive reads the last ten years of annual reports, the proxy statements, and the earnings calls, then argues the case the way Buffett, Klarman, and Hohn would, and checks every claim against the source.

  • What the business is worth, as a range, and the margin of safety at today’s price
  • Prices to start buying, buy, and buy hard
  • The three things that would make this a mistake
  • Every number footnoted to the filing it came from
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What a finished deep dive looks like

Not advice. Numbers on this page come from SEC filings and are updated each night; prices are updated again after the US market closes. The five-year figures are rounded.