SEC reporting owner

Flagship Ventures Fund IV, L.P. SEC insider disclosures

Explore Flagship Ventures Fund IV, L.P.'s reporting-owner identity, issuer relationships, purchases, sales and SEC filing receipts.

As of 2026-10-07T00:29:11.873Z

Reporting owner CIK
0001503559
Issuers
11
Coverage
verified

Inspect this reporting owner's activity

Step 1 of 3

Issuer relationships

Flagship Ventures Fund IV, L.P.: source evidence dated 2026-10-07T00:29:11.873Z.

Issuer
Eleven Biotherapeutics, Inc.
CIK
0001485003
Tickers
EBIO
Officer
No
Director
No
What you should see

The displayed owner or issuer and source fields identify the receipt to verify; keep reporting and availability dates separate.

Step 2 of 3

Which issuer and transaction does this person appear in?

Match the reviewed owner identity, issuer and transaction code. Directory eligibility does not turn every filing into a strategy signal.

What you should see

Use the linked SEC receipts and company profiles to verify what became public and when.

Step 3 of 3

Browse insider directory

Use the linked SEC receipts and company profiles to verify what became public and when.

Browse insider directory
What you should see

Keep reporting dates and units beside the answer, and inspect its original citations.

Issuer relationships

See the complete issuer relationships

A reporting-owner CIK identifies the filer across issuer relationships and name aliases. A filer may be an individual or an organization; the filing role is the relevant evidence.

Scroll sideways to compare all columns. Select a heading to sort.

Eleven Biotherapeutics, Inc.0001485003EBIONoNo
T2 Biosystems, Inc.0001492674TTOONoNo
Seres Therapeutics, Inc.0001609809MCRBNoNo
Editas Medicine, Inc.0001650664EDITNoNo
Syros Pharmaceuticals, Inc.0001556263SYRSNoNo
Evelo Biosciences, Inc.0001694665EVLONoNo
Rubius Therapeutics, Inc.0001709401RUBYNoNo
Moderna, Inc.0001682852MRNANoNo
Kaleido Biosciences, Inc.0001751299KLDONoNo
TransMedics Group, Inc.0001756262TMDXNoNo
Axcella Health Inc.0001633070AXLANoNo

Recent SEC transactions

Code P identifies a purchase, S a sale and A an award. Awards and open-market purchases describe different events. Use the public availability date when deciding when a researcher could have known about the transaction.

Scroll sideways to compare all columns. Select a heading to sort.

No records are available for this view.

Up to 50 transactions from the recent two-year owner window.

Source evidence and strategy eligibility

The transactions below come from filings; a historical tracker separately simulates following eligible events. Joint filers can report the same transaction, and an owner can have filings at multiple companies. Public availability, amendment lineage and verified coverage determine which events a historical tracker may use.

The current directory marks this owner's filing coverage verified.

Aurora · AI research assistant

Try this in Aurora

Edit the request, then open it in Aurora. You choose when to send it.