Insider Ownership Activity for Ronald L. Olson

SEC Forms 3/4/5 positions, issuer links, and transaction evidence for this reporting owner.

Linked issuers

Largest position

BERKSHIRE HATHAWAY INC

Disclosed value

$9.61M

Transaction activity

Available

Owner position snapshot (Forms 3/4/5): Forms 3/4/5 show a reporting owner's SEC-disclosed positions and transactions. They provide ownership context, not a complete public-float ownership table.
Estimated owner position value
3/4/5
$9.61M
Estimated from parsed Forms 3/4/5 when filings include enough holding data.
Issuers linked to this owner
3/4/5
3
Distinct issuers connected to this reporting owner in parsed SEC filings.
Largest linked issuer position
3/4/5
BERKSHIRE HATHAWAY INC (BRK-B)
$9.59M from parsed reporting-owner filings.
Latest parsed reporting-owner filing
SEC
22 Dec 2025
Most recent reporting-owner filing date in the parsed SEC record.
BERKSHIRE HATHAWAY INC (BRK-B)
Estimated value: $9.59M · Role: Director
WESTERN ASSET PREMIER BOND FUND (WEA)
Estimated value: $22.4K · Role: Director
+1 more
Additional issuer positions are listed below.
How to read Forms 3/4/5 positions
Reported values are filing-backed estimates from parsed SEC Forms 3/4/5 when the filing includes enough share and price data.
Use this as reporting-owner context, not as a full capitalization table or a public-float ownership breakdown.
Location: Los Angeles, CA
Latest SEC signature: /s/ William Deckelman as Attorney-in-Fact
SEC filing history: Open SEC filing history

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