Form 4 data
Insider trading leaderboard
The largest open market purchases and sales that company officers, directors and 10% owners reported on Form 4, ranked by dollar value. Grants, option exercises, shares withheld for tax and gifts are left out, and sales under a Rule 10b5-1 plan have their own list.
Not financial or investment advice. Filing Ahoy reports what was filed; it does not tell you what to buy or sell. Filing Ahoy is not affiliated with the SEC.
This week: the last 7 days
Form 4s filed from Oct 21, 2026 through today, Eastern time, ranked by dollar value.
Largest open market purchases
-
Group 1 Automotive Inc (GPI)
Conifer Management, L.L.C., 10% owner
Open market or private purchase (code P)
- Value
- $24,232,209
- Shares
- 100,000
- Average price
- $242.32
- Trade date
- Oct 22, 2026 to Oct 26, 2026
- Filed
- Oct 26, 2026
-
Corebridge Financial, Inc. (CRBG)
NIPPON LIFE INSURANCE CO, 10% owner
Open market or private purchase (code P)
- Value
- $8,662,933
- Shares
- 246,440
- Average price
- $35.15
- Trade date
- Oct 22, 2026
- Filed
- Oct 26, 2026
-
Bluerock Private Real Estate Fund (BPRE)
KAMFAR RAMIN, Director
Open market or private purchase (code P)
- Value
- $2,126,091
- Shares
- 170,320
- Average price
- $12.48
- Trade date
- Oct 22, 2026 to Oct 23, 2026
- Filed
- Oct 26, 2026
-
Pluri Inc. (PLUR)
Manieu Alexandre Weinstein, Director and 10% owner
Open market or private purchase (code P)
- Value
- $1,250,001
- Shares
- 833,334
- Average price
- $1.50
- Trade date
- Oct 23, 2026
- Filed
- Oct 27, 2026
-
Prothena Corp Public Ltd Co (PRTA)
SCULLY WILLIAM P, 10% owner
Open market or private purchase (code P)
- Value
- $1,222,045
- Shares
- 150,000
- Average price
- $8.15
- Trade date
- Oct 22, 2026 to Oct 23, 2026
- Filed
- Oct 26, 2026
-
Optimum Communications, Inc. (OPTU)
SUBIN NEIL S, 10% owner; MILFAM LLC, 10% owner; MILFAM GP, LLC, 10% owner; Dark Mirage, LP, 10% owner
Open market or private purchase (code P)
- Value
- $1,163,551
- Shares
- 2,228,007
- Average price
- $0.5222
- Trade date
- Oct 22, 2026 to Oct 23, 2026
- Filed
- Oct 26, 2026
-
Korro Bio, Inc. (KRRO)
Lynx1 Capital Management LP, 10% owner; Nichols Weston, 10% owner
Open market or private purchase (code P)
- Value
- $884,752
- Shares
- 79,809
- Average price
- $11.09
- Trade date
- Oct 22, 2026 to Oct 26, 2026
- Filed
- Oct 26, 2026
-
Blackstone Multi-Strategy Hedge Fund L.P.
Abrahams Riad M, Chief Executive Officer and Director
Open market or private purchase (code P)
- Value
- $795,000
- Shares
- 31,213.19
- Average price
- $25.47
- Trade date
- Oct 22, 2026
- Filed
- Oct 26, 2026
-
Gentherm Inc (THRM)
MASCARENAS PAUL ANTHONY, Director
Open market or private purchase (code P)
- Value
- $532,600
- Shares
- 20,000
- Average price
- $26.63
- Trade date
- Oct 23, 2026
- Filed
- Oct 26, 2026
-
CitroTech Inc. (CITR)
HUFF CRAIG A, Director and 10% owner; BoltRock Holdings LLC, Director and 10% owner
Open market or private purchase (code P)
- Value
- $500,000
- Shares
- 200,000
- Average price
- $2.50
- Trade date
- Oct 22, 2026
- Filed
- Oct 26, 2026
Largest open market sales
Sales on filings that do not check the Rule 10b5-1 box and do not name a plan in a footnote.
No priced open market sale of this kind in the Form 4s we have read since Oct 21, 2026.
Largest sales under a Rule 10b5-1 plan
A Rule 10b5-1 plan sets up trades in advance. These are listed apart because the timing was set when the plan was adopted.
No priced 10b5-1 plan sale in the Form 4s we have read since Oct 21, 2026.
This month: the last 30 days
Form 4s filed from Sep 28, 2026 through today, Eastern time, ranked by dollar value.
Largest open market purchases
-
Group 1 Automotive Inc (GPI)
Conifer Management, L.L.C., 10% owner
Open market or private purchase (code P)
- Value
- $24,232,209
- Shares
- 100,000
- Average price
- $242.32
- Trade date
- Oct 22, 2026 to Oct 26, 2026
- Filed
- Oct 26, 2026
-
Corebridge Financial, Inc. (CRBG)
NIPPON LIFE INSURANCE CO, 10% owner
Open market or private purchase (code P)
- Value
- $8,662,933
- Shares
- 246,440
- Average price
- $35.15
- Trade date
- Oct 22, 2026
- Filed
- Oct 26, 2026
-
Bluerock Private Real Estate Fund (BPRE)
KAMFAR RAMIN, Director
Open market or private purchase (code P)
- Value
- $2,126,091
- Shares
- 170,320
- Average price
- $12.48
- Trade date
- Oct 22, 2026 to Oct 23, 2026
- Filed
- Oct 26, 2026
-
Pluri Inc. (PLUR)
Manieu Alexandre Weinstein, Director and 10% owner
Open market or private purchase (code P)
- Value
- $1,250,001
- Shares
- 833,334
- Average price
- $1.50
- Trade date
- Oct 23, 2026
- Filed
- Oct 27, 2026
-
Prothena Corp Public Ltd Co (PRTA)
SCULLY WILLIAM P, 10% owner
Open market or private purchase (code P)
- Value
- $1,222,045
- Shares
- 150,000
- Average price
- $8.15
- Trade date
- Oct 22, 2026 to Oct 23, 2026
- Filed
- Oct 26, 2026
-
Optimum Communications, Inc. (OPTU)
SUBIN NEIL S, 10% owner; MILFAM LLC, 10% owner; MILFAM GP, LLC, 10% owner; Dark Mirage, LP, 10% owner
Open market or private purchase (code P)
- Value
- $1,163,551
- Shares
- 2,228,007
- Average price
- $0.5222
- Trade date
- Oct 22, 2026 to Oct 23, 2026
- Filed
- Oct 26, 2026
-
Korro Bio, Inc. (KRRO)
Lynx1 Capital Management LP, 10% owner; Nichols Weston, 10% owner
Open market or private purchase (code P)
- Value
- $884,752
- Shares
- 79,809
- Average price
- $11.09
- Trade date
- Oct 22, 2026 to Oct 26, 2026
- Filed
- Oct 26, 2026
-
Blackstone Multi-Strategy Hedge Fund L.P.
Abrahams Riad M, Chief Executive Officer and Director
Open market or private purchase (code P)
- Value
- $795,000
- Shares
- 31,213.19
- Average price
- $25.47
- Trade date
- Oct 22, 2026
- Filed
- Oct 26, 2026
-
Gentherm Inc (THRM)
MASCARENAS PAUL ANTHONY, Director
Open market or private purchase (code P)
- Value
- $532,600
- Shares
- 20,000
- Average price
- $26.63
- Trade date
- Oct 23, 2026
- Filed
- Oct 26, 2026
-
CitroTech Inc. (CITR)
HUFF CRAIG A, Director and 10% owner; BoltRock Holdings LLC, Director and 10% owner
Open market or private purchase (code P)
- Value
- $500,000
- Shares
- 200,000
- Average price
- $2.50
- Trade date
- Oct 22, 2026
- Filed
- Oct 26, 2026
Largest open market sales
Sales on filings that do not check the Rule 10b5-1 box and do not name a plan in a footnote.
No priced open market sale of this kind in the Form 4s we have read since Sep 28, 2026.
Largest sales under a Rule 10b5-1 plan
A Rule 10b5-1 plan sets up trades in advance. These are listed apart because the timing was set when the plan was adopted.
No priced 10b5-1 plan sale in the Form 4s we have read since Sep 28, 2026.
69 sales filed on or before Oct 27, 2026 are left out of both sale lists, because we did not yet record the 10b5-1 box when we read them.
Companies with the most insider buying
Open market purchases (code P) filed in the last 30 days, added up by company.
-
Group 1 Automotive Inc (GPI)
1 filing by 1 insider
Open market or private purchase (code P)
- Total value
- $24,232,209
- Filings
- 1
- Filed
- on Oct 26, 2026
- Conifer Management, L.L.C., filed Oct 26, 2026, $24,232,209. Filing on sec.gov
-
Corebridge Financial, Inc. (CRBG)
1 filing by 1 insider
Open market or private purchase (code P)
- Total value
- $8,662,933
- Filings
- 1
- Filed
- on Oct 26, 2026
- NIPPON LIFE INSURANCE CO, filed Oct 26, 2026, $8,662,933. Filing on sec.gov
-
Bluerock Private Real Estate Fund (BPRE)
2 filings by 2 insiders
Open market or private purchase (code P)
- Total value
- $2,151,078
- Filings
- 2
- Filed
- from Oct 23, 2026 to Oct 26, 2026
- KAMFAR RAMIN, filed Oct 26, 2026, $2,126,091. Filing on sec.gov
- Ruddy Jordan B., filed Oct 23, 2026, $24,987. Filing on sec.gov
-
Pluri Inc. (PLUR)
1 filing by 1 insider
Open market or private purchase (code P)
- Total value
- $1,250,001
- Filings
- 1
- Filed
- on Oct 27, 2026
- Manieu Alexandre Weinstein, filed Oct 27, 2026, $1,250,001. Filing on sec.gov
-
Prothena Corp Public Ltd Co (PRTA)
1 filing by 1 insider
Open market or private purchase (code P)
- Total value
- $1,222,045
- Filings
- 1
- Filed
- on Oct 26, 2026
- SCULLY WILLIAM P, filed Oct 26, 2026, $1,222,045. Filing on sec.gov
-
Optimum Communications, Inc. (OPTU)
1 filing by 1 insider
Open market or private purchase (code P)
- Total value
- $1,163,551
- Filings
- 1
- Filed
- on Oct 26, 2026
- SUBIN NEIL S, filed Oct 26, 2026, $1,163,551. Filing on sec.gov
-
Korro Bio, Inc. (KRRO)
1 filing by 1 insider
Open market or private purchase (code P)
- Total value
- $884,752
- Filings
- 1
- Filed
- on Oct 26, 2026
- Lynx1 Capital Management LP, filed Oct 26, 2026, $884,752. Filing on sec.gov
-
Blackstone Multi-Strategy Hedge Fund L.P.
1 filing by 1 insider
Open market or private purchase (code P)
- Total value
- $795,000
- Filings
- 1
- Filed
- on Oct 26, 2026
- Abrahams Riad M, filed Oct 26, 2026, $795,000. Filing on sec.gov
-
Gentherm Inc (THRM)
2 filings by 2 insiders
Open market or private purchase (code P)
- Total value
- $662,600
- Filings
- 2
- Filed
- on Oct 26, 2026
- MASCARENAS PAUL ANTHONY, filed Oct 26, 2026, $532,600. Filing on sec.gov
- Presley William T., filed Oct 26, 2026, $130,000. Filing on sec.gov
-
CitroTech Inc. (CITR)
1 filing by 1 insider
Open market or private purchase (code P)
- Total value
- $500,000
- Filings
- 1
- Filed
- on Oct 26, 2026
- HUFF CRAIG A, filed Oct 26, 2026, $500,000. Filing on sec.gov
Cluster buys
Companies where 2 or more different insiders each filed a Form 4 reporting an open market purchase in the last 30 days. Joint filers on one filing count once.
-
Stewart Information Services Corp (STC)
3 insiders bought on separate filings: Apel Thomas G; Corey William S. Jr.; BRADLEY C ALLEN JR
Open market or private purchase (code P)
- Total value
- $283,710
- Filings
- 3
- Filed
- on Oct 26, 2026
- Apel Thomas G, filed Oct 26, 2026, $95,470. Filing on sec.gov
- BRADLEY C ALLEN JR, filed Oct 26, 2026, $94,600. Filing on sec.gov
- Corey William S. Jr., filed Oct 26, 2026, $93,640. Filing on sec.gov
-
Bluerock Private Real Estate Fund (BPRE)
2 insiders bought on separate filings: KAMFAR RAMIN; Ruddy Jordan B.
Open market or private purchase (code P)
- Total value
- $2,151,078
- Filings
- 2
- Filed
- from Oct 23, 2026 to Oct 26, 2026
- KAMFAR RAMIN, filed Oct 26, 2026, $2,126,091. Filing on sec.gov
- Ruddy Jordan B., filed Oct 23, 2026, $24,987. Filing on sec.gov
-
Gentherm Inc (THRM)
2 insiders bought on separate filings: MASCARENAS PAUL ANTHONY; Presley William T.
Open market or private purchase (code P)
- Total value
- $662,600
- Filings
- 2
- Filed
- on Oct 26, 2026
- MASCARENAS PAUL ANTHONY, filed Oct 26, 2026, $532,600. Filing on sec.gov
- Presley William T., filed Oct 26, 2026, $130,000. Filing on sec.gov
-
U S Global Investors Inc (GROW)
2 insiders bought on separate filings: Gator Capital Management, LLC; Pilecki Derek Steven
Open market or private purchase (code P)
- Total value
- $23,384
- Filings
- 2
- Filed
- on Oct 26, 2026
- Gator Capital Management, LLC, filed Oct 26, 2026, $11,692. Filing on sec.gov
- Pilecki Derek Steven, filed Oct 26, 2026, $11,692. Filing on sec.gov
How the leaderboard is built
- Every row is one Form 4. Value is the shares on each line coded P or S times the price reported on that line, added up. Average price is that value divided by the shares. Nothing is rounded except the dollar totals.
- Only the Form 4s Filing Ahoy has read from EDGAR's list of new filings are included. Amendments (Form 4/A) are left out so a corrected filing is not counted twice, and a filing with a P or S line that gives no price is left out of the rankings.
- Names are as filed. EDGAR usually writes a person's last name first.
- The filed date is the day EDGAR accepted the filing, Eastern time. The trade date is the date on the filing's own lines, which can be weeks earlier when a filing is late.
- A Form 4 shows what was filed. It does not say why anyone traded. How to read a Form 4 explains the codes.
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