Insider holders · CIK 0001709401
Rubius Therapeutics, Inc. · RUBY
Every insider with a reported Table I holding at this company, ranked by their last-reported share count. A balance is only as fresh as its filing — the report date sits next to every row on purpose. ← Back to activity
| Insider | Direct shares | Indirect shares | Total reported | Last report (ET) | From |
|---|---|---|---|---|---|
| Flagship V VentureLabs Rx Fund, L.P.10% Owner | — | 5,000,000 | 5,000,000 | Jul 23, 2018 · 4:34 pm EDT | Form 4 |
| Flagship Ventures Opportunities Fund I, L.P.10% Owner | — | 5,000,000 | 5,000,000 | Jul 23, 2018 · 4:34 pm EDT | Form 4 |
| Flagship VentureLabs IV, LLC10% Owner | — | 5,000,000 | 5,000,000 | Jul 23, 2018 · 4:34 pm EDT | Form 4 |
| Flagship Ventures Fund V, L.P.10% Owner | — | 5,000,000 | 5,000,000 | Jul 23, 2018 · 4:34 pm EDT | Form 4 |
| Flagship Ventures Fund IV-Rx, L.P.10% Owner | — | 5,000,000 | 5,000,000 | Jul 23, 2018 · 4:34 pm EDT | Form 4 |
| Flagship Ventures Fund IV General Partner LLCDirector | — | 5,000,000 | 5,000,000 | Jul 23, 2018 · 4:34 pm EDT | Form 4 |
| Flagship Ventures Fund IV, L.P.10% Owner | — | 5,000,000 | 5,000,000 | Jul 23, 2018 · 4:34 pm EDT | Form 4 |
| Edwin M Kania Jr.10% Owner | — | 5,000,000 | 5,000,000 | Jul 23, 2018 · 4:34 pm EDT | Form 4 |
| Noubar AfeyanDirector | — | 5,000,000 | 5,000,000 | Jul 23, 2018 · 4:34 pm EDT | Form 4 |
| David R EpsteinDirector | 4,800,453 | 180,000 | 4,980,453 | Feb 14, 2019 · 5:02 pm EST | Form 5 |
| Torben Straight NissenPresident | 1,860,000 | — | 1,860,000 | Jul 17, 2018 · 8:48 pm EDT | Form 3 |
| Christopher L. CarpenterChief Medical Officer | 34,843 | — | 34,843 | Jan 24, 2019 · 5:24 pm EST | Form 4 |
| Jonathan SymondsDirector | 25,000 | — | 25,000 | Jul 23, 2018 · 4:33 pm EDT | Form 4 |
| Francis M CussDirector | 10,000 | — | 10,000 | Jul 23, 2018 · 4:33 pm EDT | Form 4 |
| Catherine A. SohnDirector | 2,500 | — | 2,500 | Jul 23, 2018 · 4:34 pm EDT | Form 4 |
| Roger PomerantzDirector | 100 | — | 100 | Jul 23, 2018 · 4:33 pm EDT | Form 4 |
| Robert LangerDirector | 0 | — | 0 | Jan 18, 2019 · 4:36 pm EST | Form 4 |
Balances come from each insider’s most recent filing that reports a Table I holding; an insider who left the company years ago still appears with their last-known figure and its date. Indirect totals collapse multiple vehicles (trusts, LLCs) into one number — open the filing for the breakdown. Shares as filed, not split-adjusted.