HSC · Insider trading · 13F holders · Congress trades
Harsco Corporation (HSC)
Who is buying and selling HSC: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 5
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $0
- Congress trades, 12 months
- 1
HSC at a glance
- No open-market insider purchases or sales of HSC were filed in the last 90 days.
- 5 13F filers hold HSC among their 50 largest positions, worth $63.2M combined. The biggest bets by portfolio weight are Mill Road Capital Management LLC (7.5%), Meros Investment Management, LP (2.0%) and CIBRA Capital Ltd (1.0%). In their latest 13Fs, 1 manager opened a new position and 0 added to one.
- Members of Congress have disclosed 1 HSC trade since 2015, 0 purchases and 1 sale in the past year; the latest was Thomas MacArthur (R-NJ), selling $1K–15K on Nov 10, 2015.
HSC insider trading
No open-market insider purchases or sales of HSC were filed in the last 90 days.
Who owns HSC? Hedge funds and superinvestors
5 13F filers hold HSC among their 50 largest positions, worth $63.2M combined. The biggest bets by portfolio weight are Mill Road Capital Management LLC (7.5%), Meros Investment Management, LP (2.0%) and CIBRA Capital Ltd (1.0%). In their latest 13Fs, 1 manager opened a new position and 0 added to one.
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Mason Capital Management LLCHedge fund | 6.4% | $38.9M | 1,770,959 | -60.6% shares | Q2 2026 |
| Mill Road Capital Management LLCHedge fund | 7.5% | $15.3M | 695,264 | -66.7% shares | Q2 2026 |
| Meros Investment Management, LPInstitutional asset manager | 2.0% | $6.3M | 288,617 | -53.9% shares | Q2 2026 |
| CIBRA Capital LtdHedge fund | 1.0% | $2.1M | 109,394 | New | Q1 2026 |
| Cruiser Capital Advisors, LLCHedge fund | 0.3% | $537K | 24,485 | -24.1% shares | Q2 2026 |
Each manager counts with its latest 13F (Q2 2026: 4, Q1 2026: 1). Screen HSC in the grand portfolio →
HSC stock trades by members of Congress
Members of Congress have disclosed 1 HSC trade since 2015, 0 purchases and 1 sale in the past year; the latest was Thomas MacArthur (R-NJ), selling $1K–15K on Nov 10, 2015.
| Filed | Member | Trade | Amount | Traded | Since |
|---|---|---|---|---|---|
| Dec 6, 2015 | Thomas MacArthurR-NJ · House | Sale | $1K–15K | Nov 10, 2015 | — |
HSC questions and answers
Are insiders buying HSC stock?
No open-market insider purchases or sales of HSC were filed in the last 90 days.
Which hedge funds own HSC?
5 13F filers hold HSC among their 50 largest positions, worth $63.2M combined. The biggest bets by portfolio weight are Mill Road Capital Management LLC (7.5%), Meros Investment Management, LP (2.0%) and CIBRA Capital Ltd (1.0%). In their latest 13Fs, 1 manager opened a new position and 0 added to one.
Has Congress traded HSC?
Members of Congress have disclosed 1 HSC trade since 2015, 0 purchases and 1 sale in the past year; the latest was Thomas MacArthur (R-NJ), selling $1K–15K on Nov 10, 2015.
Who is the largest holder of HSC?
Among 13F filers, Mason Capital Management LLC reports the largest HSC position, $38.9M (1,770,959 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Mill Road Capital Management LLC's: 7.5% of its portfolio.
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