ROBERT LANGER
CIK 1239757 · last filed 2025-07-09
ROBERT LANGER is a corporate insider who has filed 91 SEC Form 4 insider transactions across 14 companies since 2007. The most recent filing, for SEER, was dated Jul 9, 2025. Across all open-market trades the lifetime net is −$753.4K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $574.5M across reported positions.
"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.
$574.45M
14
91
-$753.4K
Holdings By Company
| 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
91 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-07-09 | SEER | Grant (A) | +20,500 | $0 | EDGAR |
| 2024-06-14 | SEER | Grant (A) | +58,178 | $0 | EDGAR |
| 2024-05-07 | MRNA | Grant (A) | — | $0 | EDGAR |
| 2023-06-16 | SEER | Grant (A) | +23,443 | $0 | EDGAR |
| 2023-05-05 | MRNA | Grant (A) | — | $0 | EDGAR |
| 2022-08-19 | Korro Bio, Inc. (FREQ) Delisted | Mixed | — | $0 | EDGAR |
| 2022-06-23 | Korro Bio, Inc. (FREQ) Delisted | Grant (A) | — | $0 | EDGAR |
| 2022-06-17 | SEER | Grant (A) | +9,945 | $0 | EDGAR |
| 2022-05-02 | MRNA | Mixed | +703 | $0 | EDGAR |
| 2022-01-12 | SEER | Conv (C) | +327,102 | $0 | EDGAR |