Comparable stake leader
BlackRock, Inc.
SEC ownership of Sanofi
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001121404.
Disclosed value leader
DODGE & COX
Comparable rows
50/50
Latest evidence
31 Mar 2026
- Public ticker
- SNY on Nasdaq, SNYNF on OTC
- Parsed ownership sources
- 13F and 13D/G
- Largest SEC-reported holder
- BlackRock, Inc.
- Latest 13D/G holder
- BlackRock, Inc.
- Latest parsed ownership date
- 31 Mar 2026
- Issuer CIK
- 0001121404
- Issuer location
- Paris, France
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
2 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of Sanofi (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
BlackRock, Inc.
Disclosed value leader
DODGE & COX
Comparable rows
50/50
Latest evidence
31 Mar 2026
13F
13D/G
Lead comparable stake: 5.8%
13D/G row: BlackRock, Inc.
Showing 1-8 of 50 holder rows.
Quick read
BlackRock, Inc. leads the comparable SEC ownership view at 5.8%.
50 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 BlackRock, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock, Inc.
5.8%
Amundi
5%
DODGE & COX
2.4%
MORGAN STANLEY
1%
Fisher Asset Management, LLC
0.93%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
Company
|
5.8%
from 13D/G
|
$153,385,870
3,183,600 shares
|
— | 31 Mar 2026 |
| Amundi |
13D/G
|
5%
|
—
61,506,935 shares
|
$0 | 31 Mar 2026 |
| DODGE & COX |
13F
Company
|
2.4%
|
$1,421,533,170
29,504,632 shares
|
— | 31 Mar 2026 |
| MORGAN STANLEY |
13F
Company
|
1%
|
$602,821,892
12,511,867 shares
|
— | 31 Mar 2026 |
| Fisher Asset Management, LLC |
13F
Company
|
0.93%
|
$551,283,461
11,442,163 shares
|
— | 31 Mar 2026 |
| BANK OF AMERICA CORP /DE/ |
13F
Company
|
0.77%
|
$456,955,985
9,484,350 shares
|
— | 31 Mar 2026 |
| FRANKLIN RESOURCES INC |
13F
Company
|
0.58%
|
$345,219,004
7,165,193 shares
|
— | 31 Mar 2026 |
| Invesco Ltd. |
13F
Company
|
0.54%
|
$319,025,753
6,621,539 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 06 Jun 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 |
Recent insider transactions for Sanofi
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| No insider transactions were found in the last 12 months for this issuer. | ||||||||||
* marks a reported price that did not pass the local price check.