Perimeter Solutions
PRM
28.44
-0.18
-0.63%
Perimeter Solutions
US · PRM
#2199 by market cap
Listed 2021
28.44
-0.18
-0.63%
Live - 5344 symbols - heartbeat 205s ago
· 2026-10-08 04:45
Pre-market
28.69
+0.88%
After-hours
28.44
0.00%
Overnight
28.44
0.00%
- Market cap
- 4.66B
- P/E (TTM)i
- -12.81
- P/Bi
- 4.56
- EPSi
- -1.37
- Div yieldi
- 0.00%
- 52W posi
- 47%
Reader sentiment
Are you bullish or bearish on PRM?
Anonymous reader poll. Unscientific, not investment advice.
✦ Quant Ownership Signal how this is computed
Mixed / stable
- The number of reporting institutions increased by 1 in the most recent period (2026/Q3).
- Total institutional ownership (as a % of shares) was little changed.
Institutional ownership
- Held by institutions
- 86.35% -0.02pp
- Institutions
- 381 +1
- As of
- 2026/Q3 vs. prior period
Ownership vs. money flow
AlignedInstitutions trimmed shares last reporting period, and the stock has seen net outflows in main-fund flow over the last 20 trading sessions - the two line up.
Institutional ownership changes are reported quarterly with a lag; fund-flow data is daily. Treat this as a directional cross-check, not a precise timing signal.
Holder types
Mutual Fund73.10%
Individual/Insider8.68%
Hedge Fund5.17%
Public Company3.57%
Private Company2.92%
Family Office/Trust0.58%
Government Pension Fund0.45%
Sovereign Wealth Fund0.29%
Insurance Company0.27%
Other4.98%
Top holders as of 2026-06-30
The WindAcre Partnership LLC
9.87% · 16.15M sh
Principal Global Investors, LLC
8.17% · 13.38M sh
BlackRock
7.43% · 12.17M sh
FMR
5.86% · 9.60M sh
William Thorndike
5.21% · 8.54M sh
Vanguard Capital Management, LLC
4.70% · 7.69M sh
Dimensional Fund Advisors
2.64% · 4.32M sh
Geode Capital Management, LLC
2.58% · 4.23M sh
Janus Henderson Group plc
2.52% · 4.13M sh
State Street Global Advisors
2.21% · 3.61M sh
Bar length is relative to the largest holder shown here, not to 100% of the company.
Insiders
50 filings tracked · 20 buys · 30 sells
| Name | Role | Stake |
|---|---|---|
| William Thorndike | Co-Chairman of the Board | 5.21% |
| Haitham Khouri | Chief Executive Officer | 1.89% |
| Vivek Raj | Independent Director | 0.41% |
| Walter Howley | Co-Chairman of the Board | 0.37% |
| Robert Henderson | Independent Director | 0.20% |
| Jorge Valladares | Independent Director | 0.17% |
| Tracy Cool | Independent Director | 0.16% |
| Edward Goldberg | Vice-Chairman | 0.09% |
| Bernt Iversen | Independent Director | 0.08% |
| Sean Hennessy | Independent Director | 0.06% |
Insider transactions most recent Form 4 filings
| Date | Name | Role | Type | Shares | Price |
|---|---|---|---|---|---|
| 2026-06-29 | The WindAcre Partnership LLC | -- | Open Market Disposition | -5,705,979 | $33.00–36.25 |
| 2026-05-21 | Haitham Khouri | Chief Executive Officer | Open Market Disposition | -229,535 | $31.19–34.09 |
| 2026-05-21 | Haitham Khouri | Chief Executive Officer | Intent to Sell (Form 144) | -117,511 | $31.10 |
| 2026-05-20 | Haitham Khouri | Chief Executive Officer | Intent to Sell (Form 144) | -91,724 | $31.40 |
| 2026-05-19 | Haitham Khouri | Chief Executive Officer | Intent to Sell (Form 144) | -20,300 | $33.50 |
| 2026-05-12 | Kyle Sable | Vice President of Strategy & Corporate Development | Derivative Exercise and Sale | -49,540 | $8.36–33.59 |
| 2026-05-12 | Jeffrey Emery | -- | Derivative Exercise and Sale | -53,537 | $8.36–33.45 |
| 2026-05-11 | Kyle Sable | Vice President of Strategy & Corporate Development | Derivative Exercise and Sale | -200,460 | $3.89–32.89 |
| 2026-05-10 | Jeffrey Emery | -- | Derivative Exercise and Sale | -146,463 | $8.36–34.05 |
| 2026-05-10 | Jeffrey Emery | -- | Intent to Sell (Form 144) | -99,963 | $32.93 |
| 2026-05-07 | Jeffrey Emery | -- | Intent to Sell (Form 144) | -46,500 | $32.00 |
| 2026-04-22 | Walter Howley | Co-Chairman of the Board | Other Disposition | -3,480,640 | -- |
| 2026-03-31 | Walter Howley | Co-Chairman of the Board | Other Disposition | -1,000,000 | -- |
| 2026-03-10 | William Thorndike | Co-Chairman of the Board | Open Market Disposition | -325,000 | $23.18–23.85 |
| 2026-03-05 | William Thorndike | Co-Chairman of the Board | Open Market Disposition | -325,000 | $23.63–24.26 |
| 2026-03-02 | Walter Howley | Co-Chairman of the Board | Other Acquisition | +5,582,492 | -- |
| 2026-03-02 | Walter Howley | Co-Chairman of the Board | Other Disposition | -1,101,852 | -- |
| 2026-03-02 | Haitham Khouri | Chief Executive Officer | Other Acquisition | +1,600,317 | -- |
| 2026-03-02 | Tracy Cool | Independent Director | Other Acquisition | +65,843 | -- |
| 2026-03-02 | Vivek Raj | Independent Director | Other Acquisition | +555,859 | -- |
Form 4 filings, most recent per company. "Other Derivative Acquisition" rows are mostly RSU/option vesting, not open-market buying - the Type column says which.
Quote time 2026-10-08 04:45:48 · For reference only, not investment advice and not tailored to your situation.