ROBERT LANGER
CIK 1239757 · last filed 2025-07-09
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
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Disclosed Exposure
$574.45M
Companies
14
Total Filings
91
Lifetime Open-Market Net
-$753.4K
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| SEER | Director | 804,525 | $1.72 | $1.38M | $0 | 8 | 2025-07-09 |
| MRNA | Director | 11,481,796 | $49.91 | $573.06M | $0 | 7 | 2024-05-07 |
| Korro Bio, Inc. (FREQ) Delisted | Director | 222,891 | $14.98 | $3.34M | $0 | 5 | 2022-08-19 |
| LYRA | Director | 15,167 | $0.70 | $10.6K | $0 | 2 | 2020-05-06 |
| Rubius Therapeutics, Inc. (RUBY) Delisted | Director | 7,500 | $0.08 | $622 | -$417.2K | 6 | 2019-10-17 |
| KALA | Director | — | $2.63 | — | $0 | 2 | 2018-06-15 |
| DNIB UNWIND, INC. (BIND) Delisted | Director | — | — | — | $0 | 2 | 2016-06-22 |
| Ocata Therapeutics, Inc. (OCAT) Delisted | Director | 0 | — | — | $0 | 7 | 2016-02-11 |
| MILLIPORE CORP /MA (MIL) Delisted | Director | 0 | — | — | $0 | 3 | 2010-07-16 |
| WYETH (WYE) Delisted | Director | 12,505 | — | — | $0 | 1 | 2009-07-22 |
| ALSERES PHARMACEUTICALS INC /DE (ALSE) Delisted | Director | — | — | — | $0 | 2 | 2009-01-16 |
| MOMENTA PHARMACEUTICALS INC (MNTA) Delisted | Director | 950,022 | — | — | -$336.2K | 5 | 2008-08-11 |
| WYETH (WYEp) Delisted | Director | 9,442 | — | — | $0 | 4 | 2008-04-28 |
| ALSERES PHARMACEUTICALS INC /DE (BLSI) Delisted | Director | — | — | — | $0 | 1 | 2007-03-20 |
Recent Filings · Page 3 of 10
91 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2019-10-17 | Rubius Therapeutics, Inc. (RUBY) Delisted | Mixed | — | -$62.7K | EDGAR |
| 2019-07-17 | Rubius Therapeutics, Inc. (RUBY) Delisted | Mixed | — | -$110.9K | EDGAR |
| 2019-06-28 | MRNA | Grant (A) | — | $0 | EDGAR |
| 2019-05-28 | Rubius Therapeutics, Inc. (RUBY) Delisted | Grant (A) | — | $0 | EDGAR |
| 2019-04-17 | Rubius Therapeutics, Inc. (RUBY) Delisted | Mixed | — | -$130.7K | EDGAR |
| 2019-01-18 | Rubius Therapeutics, Inc. (RUBY) Delisted | Mixed | — | -$108.3K | EDGAR |
| 2018-12-13 | MRNA | Conv (C) | +4,559 | $0 | EDGAR |
| 2018-07-18 | Rubius Therapeutics, Inc. (RUBY) Delisted | Grant (A) | — | $0 | EDGAR |
| 2018-06-15 | KALA | Grant (A) | — | $0 | EDGAR |
| 2017-07-21 | KALA | Grant (A) | — | $0 | EDGAR |
Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.