SEC reporting owner

Horn Margaret A SEC insider disclosures

Explore Horn Margaret A's reporting-owner identity, issuer relationships, purchases, sales and SEC filing receipts.

As of 2026-10-07T00:29:11.873Z

Reporting owner CIK
0001294192
Issuers
3
Coverage
verified

Inspect this reporting owner's activity

Step 1 of 3

Recent SEC transactions

Horn Margaret A: source evidence dated 2026-10-07T00:29:11.873Z.

Publicly available
2026-09-18
Trade date
2026-09-16
Issuer ticker
RVMD
Code
S
Shares
4,891
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

Which issuer and transaction does this person appear in?

Match the reviewed owner identity, issuer and transaction code. Directory eligibility does not turn every filing into a strategy signal.

SEC accession 0001294192-26-000007
What you should see

Use the linked SEC receipts and company profiles to verify what became public and when.

Step 3 of 3

Browse insider directory

Use the linked SEC receipts and company profiles to verify what became public and when.

Browse insider directory
What you should see

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

Issuer relationships

A reporting-owner CIK identifies the filer across issuer relationships and name aliases. A filer may be an individual or an organization; the filing role is the relevant evidence.

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KOSAN BIOSCIENCES INC0001110206KOSNYesNo
Revolution Medicines, Inc.0001628171RVMDYesNo
SANGAMO THERAPEUTICS, INC0001001233SGMONoYes

Recent SEC transactions

See the complete recent sec transactions

Code P identifies a purchase, S a sale and A an award. Awards and open-market purchases describe different events. Use the public availability date when deciding when a researcher could have known about the transaction.

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2026-09-182026-09-16RVMDS4,891Not reported
2026-09-182026-09-16RVMDS76Not reported
2026-06-182026-06-17RVMDS29,600Not reported
2026-06-182025-06-16RVMDS3,575Not reported
2026-06-182026-06-15RVMDS60,400Not reported
2026-06-162026-06-11RVMDS200Not reported
2026-06-162026-06-11RVMDS4,600Not reported
2026-06-162026-06-11RVMDS1,800Not reported
2026-06-162026-06-11RVMDS500Not reported
2026-06-162026-06-11RVMDS700Not reported
2026-06-162026-06-11RVMDS885Not reported
2026-06-162026-06-11RVMDS1,315Not reported
2026-03-202026-03-17RVMDS4,583Not reported
2026-03-042026-03-01RVMDA21,100Not reported
2026-03-042026-03-01RVMDA47,600Not reported
2026-01-102026-01-07RVMDS1,700Not reported
2026-01-102026-01-07RVMDS20,204Not reported
2026-01-102026-01-07RVMDS53,096Not reported
2025-12-192025-12-16RVMDS4,847Not reported
2025-09-192025-09-16RVMDS4,775Not reported
2025-06-192025-06-16RVMDS3,510Not reported
2025-06-172025-06-12SGMOA25,000Not reported
2025-06-172025-06-12SGMOA50,000Not reported
2025-03-202025-03-17RVMDS3,058Not reported
2025-03-052025-03-01RVMDA28,600Not reported
2025-03-052025-03-01RVMDA100,100Not reported
2024-12-192024-12-16RVMDS4,329Not reported
2024-10-162024-10-11RVMDS50,000Not reported

Up to 50 transactions from the recent two-year owner window.

Source evidence and strategy eligibility

The transactions below come from filings; a historical tracker separately simulates following eligible events. Joint filers can report the same transaction, and an owner can have filings at multiple companies. Public availability, amendment lineage and verified coverage determine which events a historical tracker may use.

The current directory marks this owner's filing coverage verified.

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