Public ownership evidence

Mine Safety Incorporated (MSA) Ownership Disclosures

Read MSA insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-10-10T12:08:28.848Z

Separate the three disclosure sources

Step 1 of 3

Recent Form 4 activity

Mine Safety Incorporated: source evidence dated 2026-10-10T12:08:28.848Z.

Available
2026-09-14
Trade date
2026-09-10
Reporting owners
Phillips Sandra L.
Code
A
Shares
10.52
Reported value
Not reported
What you should see

The displayed owner or issuer and source fields identify the receipt to verify; keep reporting and availability dates separate.

Step 2 of 3

Is this an insider transaction, 13F holding, or Congressional event?

Each source has different dates and units. Raw ticker-matched receipts, including amendments, are not deduplicated current ownership totals.

SEC 0001225208-26-007783
What you should see

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Step 3 of 3

Read MSA fundamentals

Follow the source receipt or manager/member profile. Avoid combining transaction value and 13F position value into an ownership percentage.

Read MSA fundamentals
What you should see

Keep reporting dates and units beside the answer, and inspect its original citations.

Recent Form 4 activity

See the complete recent form 4 activity
2026-09-142026-09-10Phillips Sandra L.A10.52Not reported
2026-09-142026-09-10Savi LucaA16.08Not reported
2026-09-142026-09-10PEARSE DIANE MA20.1Not reported
2026-09-142026-09-10Jordan Gregory B.A20.1Not reported
2026-08-122026-08-07Vartanian Nishan J.S20,000Not reported
2026-08-062026-08-04Marquez OctavioA626Not reported
2026-08-062026-08-04Buck Jonathan D.S469Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

Cornerstone Financial Management LLC2026-06-302026-08-2910$1,746None
Cornerstone Financial Management LLC2026-03-312026-08-2910$1,640None
Cornerstone Financial Management LLC2025-12-312026-08-297$1,121None
B. Riley Wealth Advisors, Inc.2025-03-312026-08-293,870$567,622None
Advisors Asset Management, Inc.2021-12-312026-08-281,765$266,444None
Advisors Asset Management, Inc.2020-06-302026-08-289,313$1,065,780None
Advisors Asset Management, Inc.2021-09-302026-08-282,821$411,000None
Principia Wealth Advisory, LLC2026-06-302026-08-274$698None
Principia Wealth Advisory, LLC2026-03-312026-08-274$656None
Advisors Asset Management, Inc.2024-03-312026-08-276,476$1,253,689None
Advisors Asset Management, Inc.2025-03-312026-08-274,804$704,699None
Advisors Asset Management, Inc.2020-12-312026-08-276,542$977,000None
Advisors Asset Management, Inc.2023-06-302026-08-274,026$700,363None
Advisors Asset Management, Inc.2023-09-302026-08-274,822$760,188None
Advisors Asset Management, Inc.2021-03-312026-08-275,185$777,854None
Advisors Asset Management, Inc.2021-06-302026-08-274,002$663,000None
Advisors Asset Management, Inc.2020-09-302026-08-277,809$1,047,734None
Advisors Asset Management, Inc.2025-09-302026-08-274,643$798,921None
Advisors Asset Management, Inc.2023-12-312026-08-275,540$935,318None
Giverny Capital Inc.2026-06-302026-08-27166,305$29,033,527None
Advisors Asset Management, Inc.2019-12-312026-08-2612,284$1,552,206None
VIRGINIA RETIREMENT SYSTEMS ET Al2026-06-302026-08-2613,500$2,356,830None
Advisors Asset Management, Inc.2025-06-302026-08-254,702$787,726None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-2542,599$7,436,933None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-257,436,933$42,599,000None
Advisors Asset Management, Inc.2024-09-302026-08-224,067$721,242None
Advisors Asset Management, Inc.2024-06-302026-08-228,223$1,543,375None
Advisors Asset Management, Inc.2024-12-312026-08-224,821$799,177None
Advisors Asset Management, Inc.2025-12-312026-08-222,405$385,137None
Advisors Asset Management, Inc.2020-03-312026-08-2210,674$1,080,209None
Assenagon Asset Management S.A.2026-06-302026-08-2218,784$3,279,311None
MERCER GLOBAL ADVISORS INC /ADV2026-06-302026-08-2014,957$2,611,217None
Advisors Asset Management, Inc.2019-03-312026-08-1917,993$1,860,476None
Advisors Asset Management, Inc.2019-09-302026-08-1912,985$1,416,793None
Advisors Asset Management, Inc.2019-06-302026-08-1915,860$1,671,485None
JDM Financial Group LLC2026-06-302026-08-1921$3,666None
Ensign Peak Advisors, Inc2026-03-312026-08-192,267$371,675None
Ensign Peak Advisors, Inc2025-12-312026-08-192,267$363,037None
Ensign Peak Advisors, Inc2025-09-302026-08-196,167$1,061,156None
Transamerica Financial Advisors, LLC2026-06-302026-08-1814$2,444None
CAPSTONE INVESTMENT ADVISORS, LLC2026-06-302026-08-183,605$629,361None
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO2026-06-302026-08-1811,618$2,028,270None
DARK FOREST CAPITAL MANAGEMENT LP2026-06-302026-08-1522,543$3,935,557None
SEI INVESTMENTS CO2026-06-302026-08-15198,427$34,641,386None
SEI INVESTMENTS CO2026-06-302026-08-1511,016$1,922,910None
SEI INVESTMENTS CO2026-06-302026-08-151,490$260,120None
Aster Capital Management (DIFC) Ltd2026-06-302026-08-154,413$770,422None
Glen Eagle Advisors, LLC2026-06-302026-08-15200$34,916None
Sone Capital Management, LLC2026-06-302026-08-15106,377$18,571,297None
Federation des caisses Desjardins du Quebec2026-06-302026-08-15126$21,997None

90-day public filing window, up to 50 source positions.

Cornerstone Financial Management LLC ↗Cornerstone Financial Management LLC ↗Cornerstone Financial Management LLC ↗B. Riley Wealth Advisors, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Advisors Asset Management, Inc. ↗Principia Wealth Advisory, LLC ↗Principia Wealth Advisory, LLC ↗Advisors Asset Management, Inc. ↗

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

No records are available for this view.

Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.

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