MPM BioVentures 2014, L.P.
Other reporting person · Ten-percent owner · TRDA, ITOS
As of 2026-09-16, MPM BioVentures 2014, L.P. has 47 Form 4 transactions on record across 2 companies — 40 in the trailing 12 months.
Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.
Pattern in the record: open-market sales filed in December in multiple years since 2024 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.
Reconstructed holdings
Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.
Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.
Trades by company
Filing ledger
| Date | Company | Action | Shares @ price | Value | Ownership Δ | Owned after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-09-09 | TRDA | Sale | 28,837 @ $7.13 | $206K | −0.7% of holding | 3,885,115 | Form 4 |
| 2026-09-08 | TRDA | Sale | 192,500 @ $7.41 | $1.4M | −4.7% of holding | 3,913,952 | Form 4 |
| 2026-09-04 | TRDA | Sale | 38,500 @ $7.11 | $274K | −0.9% of holding | 4,106,452 | Form 4 |
| 2026-09-03 | TRDA | Sale | 32,263 @ $7.17 | $231K | −0.8% of holding | 4,144,952 | Form 4 |
| 2026-09-02 | TRDA | Sale | 25,131 @ $7.19 | $181K | −0.6% of holding | 4,177,215 | Form 4 |
| 2026-09-01 | TRDA | Sale | 29,088 @ $7.06 | $205K | −0.7% of holding | 4,202,346 | Form 4 |
| 2026-08-31 | TRDA | Sale | 44,259 @ $6.99 | $309K | −1.0% of holding | 4,231,434 | Form 4 |
| 2026-08-28 | TRDA | Sale | 3,733 @ $7.01 | $26K | −0.1% of holding | 4,275,693 | Form 4 |
| 2026-08-27 | TRDA | Sale | 38,922 @ $7.20 | $280K | −0.9% of holding | 4,279,426 | Form 4 |
| 2026-08-26 | TRDA | Sale | 14,569 @ $7.06 | $103K | −0.3% of holding | 4,318,348 | Form 4 |
| 2026-08-25 | TRDA | Sale | 26,522 @ $7.54 | $200K | −0.6% of holding | 4,332,917 | Form 4 |
| 2026-08-24 | TRDA | Sale | 21,623 @ $7.34 | $159K | −0.5% of holding | 4,359,439 | Form 4 |
| 2025-12-04 | — | Sale | 83,230 @ $0.97 | $81K | −1.7% of holding | 4,784,111 | Form 4 |
| 2025-12-03 | — | Sale | 57,225 @ $0.87 | $50K | −1.2% of holding | 4,867,341 | Form 4 |
| 2025-12-02 | — | Sale | 59,277 @ $0.89 | $53K | −1.2% of holding | 4,924,566 | Form 4 |
| 2025-12-01 | — | Sale | 60,917 @ $0.94 | $57K | −1.2% of holding | 4,983,843 | Form 4 |
| 2025-11-28 | — | Sale | 20,277 @ $0.99 | $20K | −0.4% of holding | 5,044,760 | Form 4 |
| 2025-11-26 | — | Sale | 60,733 @ $0.98 | $60K | −1.2% of holding | 5,065,037 | Form 4 |
| 2025-11-25 | — | Sale | 42,533 @ $0.92 | $39K | −0.8% of holding | 5,125,770 | Form 4 |
| 2025-11-24 | — | Sale | 88,802 @ $0.98 | $87K | −1.7% of holding | 5,168,303 | Form 4 |
| 2025-11-21 | — | Sale | 64,331 @ $0.83 | $53K | −1.2% of holding | 5,257,105 | Form 4 |
| 2025-11-20 | — | Sale | 41,152 @ $0.89 | $37K | −0.8% of holding | 5,321,436 | Form 4 |
| 2025-11-19 | — | Sale | 66,324 @ $0.94 | $62K | −1.2% of holding | 5,362,588 | Form 4 |
| 2025-11-18 | — | Sale | 52,627 @ $0.93 | $49K | −1.0% of holding | 5,428,912 | Form 4 |
| 2025-11-17 | — | Sale | 57,061 @ $0.95 | $54K | −1.0% of holding | 5,481,539 | Form 4 |
| 2025-11-14 | — | Sale | 61,640 @ $0.93 | $57K | −1.1% of holding | 5,538,600 | Form 4 |
| 2025-11-13 | — | Sale | 90,951 @ $0.98 | $89K | −1.6% of holding | 5,600,240 | Form 4 |
| 2025-11-12 | — | Sale | 40,669 @ $1.09 | $44K | −0.7% of holding | 5,691,191 | Form 4 |
| 2025-11-11 | — | Sale | 55,810 @ $1.14 | $64K | −1.0% of holding | 5,731,860 | Form 4 |
| 2025-11-10 | — | Sale | 48,570 @ $1.18 | $57K | −0.8% of holding | 5,787,670 | Form 4 |
| 2025-11-07 | — | Sale | 68,480 @ $1.11 | $76K | −1.2% of holding | 5,836,240 | Form 4 |
| 2025-11-06 | — | Sale | 54,452 @ $1.21 | $66K | −0.9% of holding | 5,904,720 | Form 4 |
| 2025-11-05 | — | Sale | 47,950 @ $1.22 | $58K | −0.8% of holding | 5,959,172 | Form 4 |
| 2025-11-04 | — | Sale | 140,488 @ $1.22 | $171K | −2.3% of holding | 6,007,122 | Form 4 |
| 2025-11-03 | — | Sale | 94,063 @ $1.29 | $121K | −1.5% of holding | 6,147,610 | Form 4 |
| 2025-10-31 | — | Sale | 114,044 @ $1.28 | $146K | −1.8% of holding | 6,241,673 | Form 4 |
| 2025-10-30 | — | Sale | 86,936 @ $1.43 | $124K | −1.3% of holding | 6,355,717 | Form 4 |
| 2025-10-29 | — | Sale | 134,240 @ $1.55 | $208K | −2.0% of holding | 6,442,653 | Form 4 |
| 2025-10-28 | — | Sale | 69,068 @ $1.64 | $113K | −1.0% of holding | 6,576,893 | Form 4 |
| 2025-10-27 | — | Sale | 72,709 @ $1.72 | $125K | −1.1% of holding | 6,645,961 | Form 4 |
| 2025-05-13 | ITOS | Sale | 630,191 @ $8.06 | $5.1M | −23.0% of holding | 2,108,594 | Form 4 |
| 2025-03-27 | — | Sale | 1,963 @ $1.05 | $2K | −0.1% of holding | 3,208,793 | Form 4 |
| 2024-12-11 | TRDA | Sale | 21,787 @ $20.23 | $441K | −0.5% of holding | 4,381,062 | Form 4 |
| 2024-12-10 | TRDA | Sale | 22,935 @ $20.77 | $476K | −0.5% of holding | 4,402,849 | Form 4 |
3 award / exercise / gift records — not counted as purchases
Source: SEC Form 4 filings. Each row links to its original filing.
Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.