Biodesix Inc
BDSX- Exchange
- Nasdaq
- Industry
- Services-Medical Laboratories
- SEC CIK
- 0001439725
In the last 90 days, Biodesix Inc insiders filed 2 open-market purchases and 0 sales; 45 institutions reported holding it in 13F filings for Q2 2026, worth $98.5M in total; no superinvestor holds it.
Holders of 5% or more of BDSX
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Biodesix Inc, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Schuler Jack W | 13D/A | 26.00%39.8M shares | +1.30 ppfrom 24.70% | May 20, 20252 filings | Sep 3, 2025 | SEC |
| Schuler Jack W | 13D/A | 24.00%2.33M shares | −3.00 ppfrom 27.00% | Sep 23, 20252 filings | Jan 27, 2026 | SEC |
| Hirschman Orin | 13G | 7.70%758.3K shares | New | Apr 28, 20261 filing | Apr 28, 2026 | SEC |
| Telemark Asset Management, LLC | 13G | 5.40%427.8K shares | +1.30 ppfrom 4.10% | Jan 23, 20262 filings | Jan 26, 2026 | SEC |
| Perceptive Advisors LLC | 13G | 5.10%7.67M shares | +0.60 ppfrom 4.50% | Feb 14, 20252 filings | May 15, 2025 | SEC |
| Soleus Capital Master Fund, L.P. | 13G | 5.10%525.2K shares | +1.00 ppfrom 4.10% | Jan 13, 20263 filings | Jun 18, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
15 Schedule 13D and 13G filings on Biodesix Inc, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Jun 18, 20265:00 PM ET | Soleus Capital Master Fund, L.P.and 5 others | 13G | 5.10%525.2K shares | +1.00 ppfrom 4.10% | Jun 17, 2026 | SEC |
| May 15, 20264:00 PM ET | Perceptive Advisors LLCand 4 others | 13G/A | 4.60%483.7K shares | –Below 5% | Mar 31, 2026 | SEC |
| May 8, 20265:00 PM ET | Soleus Capital Master Fund, L.P.and 5 others | 13G/A | 4.10%416.6K shares | −2.20 ppfrom 6.30%Below 5% | Mar 31, 2026 | SEC |
| Apr 28, 20264:15 PM ET | Hirschman Orinand 1 other | 13G | 7.70%758.3K shares | New | Mar 31, 2026 | SEC |
| Jan 27, 20262:28 PM ET | Schuler Jack Wand 2 others | 13D/A | 24.00%2.33M shares | −3.00 ppfrom 27.00% | Jan 23, 2026 | SEC |
| Jan 26, 20261:59 PM ET | Telemark Asset Management, LLCand 2 others | 13G | 5.40%427.8K shares | +1.30 ppfrom 4.10% | Jan 22, 2026 | SEC |
| Jan 23, 20262:51 PM ET | Telemark Asset Management, LLCand 2 others | 13G/A | 4.10%327.8K shares | –Below 5% | Dec 31, 2025 | SEC |
| Jan 13, 20264:31 PM ET | Soleus Capital Master Fund, L.P.and 5 others | 13G | 6.30%500.0K shares | New | Jan 12, 2026 | SEC |
| Sep 23, 20259:29 AM ET | Schuler Jack Wand 2 others | 13D/A | 27.00%2.15M shares | – | Sep 19, 2025 | SEC |
| Sep 3, 20254:43 PM ET | Schuler Jack Wand 2 others | 13D/A | 26.00%39.8M shares | +1.30 ppfrom 24.70% | Aug 29, 2025 | SEC |
| May 20, 20254:11 PM ET | Schuler Jack Wand 2 others | 13D/A | 24.70%36.3M shares | – | May 16, 2025 | SEC |
| May 15, 20254:30 PM ET | Perceptive Advisors LLCand 4 others | 13G | 5.10%7.67M shares | +0.60 ppfrom 4.50% | May 12, 2025 | SEC |
| Feb 14, 20254:15 PM ET | Perceptive Advisors LLCand 4 others | 13G/A | 4.50%6.67M shares | –Below 5% | Dec 31, 2024 | SEC |
| Aug 23, 2021 | Manlia Ltd | 13GOld format | – | New | – | SEC |
| Jun 1, 2021 | Life Sciences Alternative Funding LLC | 13GOld format | – | New | – | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Biodesix Inc shares.
No Form 144 notices for Biodesix Inc are on file.