Investors / United States / Flagship Pioneering
Flagship Pioneering
Investor · MA, United States · North America
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Your fit with Flagship Pioneering
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Or find every investor that fitsFlagship Pioneering lists 29 checked portfolio companies on its own site and is named in 8 funding rounds, 6 of them as lead. Its most frequent entry is Series A, 50% of the companies with a known first round. Its largest themes are Healthcare & Biotech (67%), AI & Machine Learning (31%) and Media & Entertainment (3%). 100% of its companies are based in United States. It invests most often alongside Altitude Life Science Ventures, ARCH Venture Partners and Modi Ventures.
Counts come from funding rounds that name Flagship Pioneering, complete from mid-2025: earlier rounds appear only when they were reported later. Round amounts and full round histories are on Fundup AI.
Round figures show recent activity, not Flagship Pioneering's whole history. Rounds on record name 6 companies; its own site lists 29. Funding rounds are complete from mid-2025, so counts and the yearly trend undercount a firm that invested before then. The portfolio, themes and places come from its own site and are not affected.
Entry stage
share of companies by the stage of its first roundFlagship Pioneering does not state its stages on its site, so only what it does is shown.
Show as a table
| Value | |
|---|---|
| Pre-seed | 0% |
| Seed | 33% |
| Series A | 50% |
| Series B | 0% |
| Growth | 17% |
Activity by year
rounds it joined, last 10 yearsShow as a table
| Total | Rounds it led | |
|---|---|---|
| '17 | 0 | 0 |
| '18 | 0 | 0 |
| '19 | 0 | 0 |
| '20 | 0 | 0 |
| '21 | 0 | 0 |
| '22 | 0 | 0 |
| '23 | 0 | 0 |
| '24 | 0 | 0 |
| '25 | 5 | 4 |
| '26 | 3 | 2 |
Investor profile
percentile among all firmsShow as a table
| Measure | Percentile of all firms | Value |
|---|---|---|
| Portfolio size | 66th | 29 companies |
| Recent activity | 76th | 3 rounds in 12 months |
| Early stage | 64th | 33% of entries at pre-seed or seed |
| Evidence | 92th | 21% of companies confirmed by a round |
| Sector focus | 91th | 67% in its largest sector |
| Reach | 19th | 1 country |
Invests most often with
firms sharing its portfolio companiesShow as a table
| Share | |
|---|---|
| Altitude Life Science Ventures | 5 |
| ARCH Venture Partners | 3 |
| Modi Ventures | 3 |
| ARK Venture Fund | 2 |
| Omega Funds | 2 |
| RA Capital | 2 |
| Stage 1 Ventures | 2 |
| Acre Venture Partners | 1 |
Its portfolio companies
where they are based, and what their own sites showSite status
- Site answers29100%
- No longer answers00%
- Points to another company00%
- Parked or sold domain00%
A site that stops answering three checks in a row is counted as no longer answering; that is not proof of closure. A site that points to another company is often an acquisition.
Investment themes
share of its checked companiesThis firmAll checked companies
Show as a table
| This firm | All checked companies | |
|---|---|---|
| Healthcare & Biotech | 67% | 15% |
| AI & Machine Learning | 31% | 18% |
| Media & Entertainment | 3% | 4% |
Co-investor network
who it backs companies with, and who they back togetherAll co-investors or Compare portfolios with Altitude Life Science Ventures
Compare Flagship Pioneering head to head
portfolio size, rounds, entry stages, themes and the companies both backThree or more firms at once: portfolio overlap.
Recent portfolio activity
when companies last raised with Flagship Pioneering| Date | Company | Stage |
|---|---|---|
| 4 Jun 2026 | Series A | |
| 21 Apr 2026 | Series A Led | |
| 14 Apr 2026 | Series C+ Led | |
| 22 Oct 2025 | Series A Led | |
| 14 Oct 2025 | Series A | |
| 18 Sept 2025 | Seed Led | |
| 1 Jul 2025 | Series A Led | |
| 12 Mar 2025 | Seed Led |
Round details for Flagship Pioneering
Amounts, full round histories and every co-investor in Flagship Pioneering's rounds are on Fundup AI. VCinfo covers investors and their portfolios.
Portfolio
29 companies checked against their own sites| Company | What it does | Themes | First round with it | Evidence |
|---|---|---|---|---|
| Abiologics is creating a new generation of biologics that surpass the limitations of today’s medicines to bring targeted, protease resistant, and immune-silent therapeutics to life. | Healthcare & Biotech | Portfolio page | ||
| Alltrna is advancing universal tRNA medicines to restore disrupted protein production, regardless of gene targeted, for thousands of diseases with the same underlying genetic mutation. | Healthcare & Biotech | Portfolio page | ||
| Ampersand is creating programmable medicines to treat disease by targeting the site of disease without affecting healthy tissue or cells. | Healthcare & Biotech | Portfolio page | ||
| Apriori Bio is ushering in a new era of AI-enabled vaccine design | Healthcare & Biotech | Portfolio page | ||
| Cellarity aims to solve complex diseases with medicines designed to correct the dynamic cell state. | Healthcare & Biotech | Portfolio page | ||
| ENAI is an agriculture biologicals company developing crop-protection and plant-performance solutions | AI & Machine LearningAI & Machine Learning | Portfolio page | ||
| The company designs medicines for any protein and every patient using a combination of chemistry, engineering, biology, and AI | Healthcare & Biotech | Oct 2025Series A | Page + round | |
| Extuitive provides a free AI connector for Meta ads, allowing users to launch hundreds of ads in minutes | AI & Machine LearningMedia & Entertainment | Sept 2025Seed | Page + round | |
| Generate Biomedicines creates breakthrough medicines using generative biology and machine learning | Healthcare & Biotech | Portfolio page | ||
| Harbinger Health develops solutions for cancer detection | Healthcare & Biotech | Apr 2026Series C+ | Page + round | |
| Inari designs plants that grow smarter by unlocking the full potential of seeds | AI & Machine LearningAI & Machine Learning | Portfolio page | ||
| Iris Labs builds technology for psychological fitness using AI. | AI & Machine LearningHealthcare & Biotech | Portfolio page | ||
| KSQ Therapeutics discovers and develops therapeutic targets and medicines to cure human diseases | Healthcare & Biotech | Portfolio page | ||
| LILA generates hypotheses, designs and runs experiments, and learns from new data in real time using advanced AI and autonomous labs | AI & Machine LearningHealthcare & Biotech | Mar 2025Seed · 3 rounds | Page + round | |
| Mirai Bio develops and delivers genetic medicines using an integrated platform for nucleic acid delivery | Healthcare & Biotech | Portfolio page | ||
| Moderna delivers mRNA medicines to people | Healthcare & Biotech | Portfolio page | ||
| Montai Therapeutics develops oral medicines for chronic inflammatory diseases using AI-powered drug discovery | Healthcare & Biotech | Portfolio page | ||
| ProFound Therapeutics is pioneering the expanded human proteome to discover new therapeutic protein drugs and drug targets | Healthcare & Biotech | Portfolio page | ||
| Prologue is creating transformative medicines by systematically discovering and evaluating viral proteins and their unique features. | Healthcare & Biotech | Portfolio page | ||
| Quotient Therapeutics is developing medicines based on somatic genomics insights | Healthcare & Biotech | Portfolio page |
About this data
site last read 10 Nov 2026- Site
- flagshippioneering.com
- Last read
- 10 Nov 2026
- Watching since
- 5 Nov 2026
- Rounds since
- 12 Mar 2025
- Companies checked
- 29
Rates come from what VCinfo has observed since observation_start. Firms tend to remove companies that closed, so early rates understate reality. A company leaving a portfolio page does not mean it closed or exited. An unreachable site means our checks failed, nothing more.
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