Comparable stake leader
CONTRAN CORP
SEC ownership of COMPX INTERNATIONAL INC
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001049606.
Disclosed value leader
CONTRAN CORP
Comparable rows
0/50
Latest evidence
20 May 2026
- Public ticker
- CIX on NYSE
- Parsed ownership sources
-
3/4/5 and 13F
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
CONTRAN CORP
Ranking: Comparable ownership first, then disclosed value
- Latest parsed ownership date
-
20 May 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001049606
- Issuer location
- Dallas, TX
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
1 signal
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of COMPX INTERNATIONAL INC (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
CONTRAN CORP
Disclosed value leader
CONTRAN CORP
Comparable rows
0/50
Latest evidence
20 May 2026
3/4/5
13F
Highest disclosed value: $232,310,246
50 rows are not safely comparable across share classes.
Showing 1-8 of 50 holder rows.
Quick read
CONTRAN CORP has the largest disclosed position value at $232.31M.
0 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens CONTRAN CORP's linked filing trail.
Disclosed position value
Top 5
CONTRAN CORP
$232.31M
DIMENSIONAL FUND ADVISORS LP
$4.19M
ROYCE & ASSOCIATES LP
$3.88M
BlackRock, Inc.
$2.51M
RENAISSANCE TECHNOLOGIES LLC
$2.5M
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| CONTRAN CORP |
3/4/5
10%+ Owner
|
—
class O/S missing
|
$232,310,246
10,755,104 shares
|
— | 01 Jun 2022 |
| DIMENSIONAL FUND ADVISORS LP |
13F
Company
|
—
class O/S missing
|
$4,191,017
179,409 shares
|
— | 31 Mar 2026 |
| ROYCE & ASSOCIATES LP |
13F
Company
|
—
class O/S missing
|
$3,879,489
166,074 shares
|
— | 31 Mar 2026 |
| BlackRock, Inc. |
13F
Company
|
—
class O/S missing
|
$2,511,294
107,504 shares
|
— | 31 Mar 2026 |
| RENAISSANCE TECHNOLOGIES LLC |
13F
Company
|
—
class O/S missing
|
$2,498,329
106,949 shares
|
— | 31 Mar 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
Company
|
—
class O/S missing
|
$1,827,219
78,220 shares
|
— | 31 Mar 2026 |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
Company
|
—
class O/S missing
|
$808,005
34,585 shares
|
— | 31 Mar 2026 |
| STATE STREET CORP |
13F
Company
|
—
class O/S missing
|
$714,816
30,600 shares
|
— | 31 Mar 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 14 Aug 2025.
Buys
$0
Insiders: 0
Sells
$0
Insiders: 0
Net
$0
Shares: 0
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-17 of 17 reporting-owner rows connected to COMPX INTERNATIONAL INC. Open a relationship link for the CIK-to-CIK filing trail.
Rows
17
Largest Forms 3/4/5 holder
CONTRAN CORP
Net 12M change
$0
Latest report
20 May 2026
Recent insider transactions for COMPX INTERNATIONAL INC
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Scott C. James | CIX | Class A Common Stock $0.01 par value per share | Award | 1,700 | 1,700 | 20 May 2026 | Direct | |||
| Michael Shawn Simmons | CIX | Class A Common Stock $0.01 par value per share | Award | 1,700 | 1,700 | 20 May 2026 | Direct | |||
| Mary A. Tidlund | CIX | Class A Common Stock $0.01 par value per share | Award | 26.6% | 1,700 | 8,100 | 20 May 2026 | Direct | ||
| Gina A. Norris | CIX | Class A Common Stock $0.01 par value per share | Award | 109.7% | 1,700 | 3,250 | 20 May 2026 | Direct | ||
| Manix Ann | CIX | Class A Common Stock $0.01 par value per share | Award | 19.8% | 1,700 | 10,275 | 20 May 2026 | Direct | ||
| Terri L. Herrington | CIX | Class A Common Stock $0.01 par value per share | Award | 20.2% | 1,700 | 10,100 | 20 May 2026 | Direct | ||
| Loretta J. Feehan | CIX | Class A Common Stock $0.01 par value per share | Award | 14.5% | 1,700 | 13,400 | 20 May 2026 | Direct | ||
| Thomas E. Barry | CIX | Class A Common Stock $0.01 par value per share | Award | 16.4% | 1,700 | 12,100 | 20 May 2026 | Direct |
* marks a reported price that did not pass the local price check.