ETRA · Electra Therapeutics, Inc. · Shareholders & Ownership
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Every disclosed holder of ETRA in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.
Who Owns ETRA
13F quarter Sep 30, 2026No chart: shares outstanding cannot be set against these holders.
| Holder group | Shares | % Out |
|---|---|---|
| Institutional (13F) | 4,727,384 | — |
| Insiders (Forms 3, 4, 5) | 21,923,300 | — |
| 13D/G-only blocks | 9,258,162 | — |
| Registered funds (N-PORT, not summed) | 0 | — |
% Out is unavailable: no shares outstanding count is on record.
13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.
Holders of ETRA
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
|
7,357,741 | ||
| 2 |
|
7,357,741 | ||
| 2.1 |
ORBIMED ADVISORS LLC
13D
CIK 1055951 · Registered investment adviser · Sep 21, 2026
Item 4 purpose: Passive investment
not summed
|
6,885,170 | ||
| 3 |
Dr. Beth C. Seidenberg ("Seidenberg")
13G
CIK 1749591 · Unknown · Sep 30, 2026
Rule 13d-1(d), exempt investor, not summed
|
6,347,539 | ||
| 3.1 |
|
6,347,539 | ||
| 4 |
Redmile Group, LLC
13G
CIK 1425738 · Registered investment adviser · Sep 21, 2026
Rule 13d-1(c), passive investor
|
5,462,881 | ||
| 5 |
|
3,795,281 | ||
| 6 |
Sanofi
13F
CIK 1121404 · Unknown · Sep 30, 2026
|
2,461,948 | ||
| 7 |
Jefferies Financial Group Inc.
13F
CIK 96223 · Holding company · Sep 30, 2026
|
2,244,333 | ||
| 8 |
|
455,484 | ||
| 9 |
|
255,635 | ||
| 10 |
|
85,504 | ||
| 11 |
|
63,656 | ||
| 12 |
Y-Intercept (Hong Kong) Ltd
13F
CIK 1772875 · Exempt reporting adviser · Sep 30, 2026
|
21,103 |
Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.