Atara Biotherapeutics, Inc. (ATRA) — Dilution Risk Analysis
Current Snapshot
Atara Biotherapeutics, Inc. (ATRA) has a DilutionWatch score of 75/10 and is classified as HIGH risk. The score date in the source data is 2026-10-03T03:45:52.527348.
This page is assembled from sourced share-structure, market-data, SEC-filing, and DilutionWatch fields. Missing values are left blank rather than estimated.
Dilution Risk Score
Score: 75/10 Source (as of 2026-10-03T03:45:52.527348)
Recent SEC Filings
3 shelf registration or ATM offering filings detected in recent history.
Recent filing forms in the source payload: FORM 4 2, 424B3 1, EFFECT 1, 4 4, S-3 1, 424B5 1.
| Form | Filed | Accession |
|---|---|---|
| Form 4 | 2026-09-04 | 0000905148-26-004085|0001290922|2026-09-04|P|104166 |
| Form 4 | 2026-08-17 | 0000905148-26-003960|0001977970|2026-08-17|S|5062 |
| 424B3 | 2026-03-25 | 0001193125-26-124322 |
| EFFECT | 2026-03-25 | 9999999995-26-000930 |
| 4 | 2026-03-19 | 0001193125-26-116060 |
| S-3 | 2026-03-17 | 0001193125-26-110849 |
| 424B5 | 2026-03-16 | 0001193125-26-108386 |
| 4 | 2026-03-11 | 0000905148-26-001224 |
| 4 | 2026-03-11 | 0000905148-26-001225 |
| 4 | 2026-03-04 | 0000905148-26-001143 |
Dilution Risk Drivers
| Driver | Stored Value | Source |
|---|---|---|
| Shelf registration capacity | $9,000,000 | Source |
| ATM offering capacity remaining | $11,135,981 | Source |
| Cash runway | 1 months | Source |
| Three-year share count growth | 96.97% | Source |
DilutionWatch Analysis
- Risk Level
- HIGH (Score: 75/10) Source
- Cash Runway
- 1 months Source
- ATM Offering Capacity Remaining
- $11,135,981 Source
- Shelf Registration Capacity
- $9,000,000 Source
- Share Count Growth (3-Year)
- 96.97% Source
What This Page Does Not Estimate
DilutionWatch does not infer missing cash runway, authorized share count, ATM capacity, shelf capacity, or share-growth values on this page. A blank field means the current source payload did not provide a usable value with provenance.
Scores and classifications are shown only when supplied by the DilutionWatch data layer. SEC filing rows link to their source accession when a filing URL is available.