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Insider · CIK 0001729504

MPM Bioventures 2018 (B), L.P.

CIK 0001729504 Name as filed on the most recent filing

Filed as MPM Bioventures 2018 (B), L.P. (23)

83 transaction lines · from 23 filings · filed 2020-07-29 to 2026-01-14 The span is the filing dates this catalog holds, not the entity's full filing history. Absence here is not evidence of absence at the SEC.

How this page attributes a trade

A line appears here when the filing that carries it names this CIK as a reporting owner, not only when the parser picked this CIK as the line's primary owner. That is why a joint filing appears on both owners' pages rather than vanishing from the second one. The catalog never merges two CIKs into one person and never splits one CIK into two: identity here is the SEC's own identifier and nothing else.

01

Issuers this insider has filed against

Ordered by last-seen filing date, newest first. Roles are as filed on the Form 4 and are not normalised.

Fault

This container could not be filled from the store. It is showing nothing because a read failed, not because no insider filed: those are different facts and this catalog will not let one stand in for the other. The last ingest the store recorded was 2026-08-20 05:22 UTC.

No issuer is recorded

The catalog holds no filing linking this CIK to an issuer.

02

Transactions

Every stored Form 4 line naming this reporting owner, newest transaction date first. Each row links to the filing it came from.

0 transactions · Newest transaction date first, id breaking the tie.

Fault

This container could not be filled from the store. It is showing nothing because a read failed, not because no insider filed: those are different facts and this catalog will not let one stand in for the other. The last ingest the store recorded was 2026-08-20 05:22 UTC.

Transactions filed by this insider
Direction Date Issuer Code Shares Price Value USD Filing
2026-01-12 Aktis Oncology, Inc.
AKTS 		P, Open-market purchase 1,112,777 acquired 18.00 20,029,986.00 Form 4, filing 0001231919-26-000057
2025-05-13 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 630,191 disposed 8.06 5,079,339.46 Form 4, filing 0001415889-25-013248
2024-12-11 Entrada Therapeutics, Inc.
TRDA 		S, Open-market sale 21,787 disposed 20.23 440,751.01 Form 4, filing 0001415889-24-029141
2024-12-10 Entrada Therapeutics, Inc.
TRDA 		S, Open-market sale 22,935 disposed 20.77 476,359.95 Form 4, filing 0001415889-24-029141
2022-01-05 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 18,135 disposed 42.03 762,214.05 Form 4, filing 0001209191-22-002168
2022-01-04 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 94,745 disposed 42.05 3,984,027.25 Form 4, filing 0001209191-22-002168
2022-01-04 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 19,366 disposed 43.20 836,611.20 Form 4, filing 0001209191-22-002168
2022-01-04 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 7,671 disposed 46.47 356,471.37 Form 4, filing 0001209191-22-002168
2022-01-04 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 6,768 disposed 45.32 306,725.76 Form 4, filing 0001209191-22-002168
2021-12-07 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 17,962 disposed 33.15 595,440.30 Form 4, filing 0001209191-21-068408
2021-12-07 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 1,494 disposed 34.11 50,960.34 Form 4, filing 0001209191-21-068408
2021-12-06 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 8,469 disposed 32.35 273,972.15 Form 4, filing 0001209191-21-068408
2021-12-06 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 1,171 disposed 33.57 39,310.47 Form 4, filing 0001209191-21-068408
2021-12-06 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 508 disposed 34.08 17,312.64 Form 4, filing 0001209191-21-068408
2021-12-06 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 60 disposed 35.04 2,102.40 Form 4, filing 0001209191-21-068408
2021-12-03 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 17,569 disposed 34.68 609,292.92 Form 4, filing 0001209191-21-068408
2021-12-03 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 2,419 disposed 35.44 85,729.36 Form 4, filing 0001209191-21-068408
2021-12-03 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 179 disposed 36.26 6,490.54 Form 4, filing 0001209191-21-068408
2021-12-02 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 29,757 disposed 33.74 1,004,001.18 Form 4, filing 0001209191-21-067706
2021-12-02 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 7,430 disposed 34.83 258,786.90 Form 4, filing 0001209191-21-067706
2021-12-01 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 6,042 disposed 33.82 204,340.44 Form 4, filing 0001209191-21-067706
2021-12-01 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 5,457 disposed 34.61 188,866.77 Form 4, filing 0001209191-21-067706
2021-12-01 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 896 disposed 35.34 31,664.64 Form 4, filing 0001209191-21-067706
2021-11-30 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 28,076 disposed 35.19 987,994.44 Form 4, filing 0001209191-21-067706
2021-11-30 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 5,861 disposed 34.62 202,907.82 Form 4, filing 0001209191-21-067706
2021-11-29 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 10,073 disposed 34.46 347,115.58 Form 4, filing 0001209191-21-067148
2021-11-29 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 298 disposed 35.37 10,540.26 Form 4, filing 0001209191-21-067148
2021-11-26 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 6,545 disposed 35.49 232,282.05 Form 4, filing 0001209191-21-067148
2021-11-26 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 6,129 disposed 36.03 220,827.87 Form 4, filing 0001209191-21-067148
2021-11-24 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 18,343 disposed 36.05 661,265.15 Form 4, filing 0001209191-21-066852
2021-11-24 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 13,126 disposed 37.02 485,924.52 Form 4, filing 0001209191-21-066852
2021-11-24 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 4,868 disposed 35.20 171,353.60 Form 4, filing 0001209191-21-066852
2021-11-23 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 19,645 disposed 36.21 711,345.45 Form 4, filing 0001209191-21-066852
2021-11-23 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 359 disposed 36.50 13,103.50 Form 4, filing 0001209191-21-066852
2021-11-22 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 11,807 disposed 37.81 446,422.67 Form 4, filing 0001209191-21-066852
2021-11-22 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 9,307 disposed 37.16 345,848.12 Form 4, filing 0001209191-21-066852
2021-11-02 Entrada Therapeutics, Inc.
TRDA 		P, Open-market purchase 100,000 acquired 20.00 2,000,000.00 Form 4, filing 0001209191-21-062982
2021-10-18 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 6,167 disposed 27.14 167,372.38 Form 4, filing 0001209191-21-060723
2021-10-15 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 8,893 disposed 27.53 244,824.29 Form 4, filing 0001209191-21-060723
2021-10-15 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 2,039 disposed 28.01 57,112.39 Form 4, filing 0001209191-21-060723
2021-10-14 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 27,320 disposed 27.30 745,836.00 Form 4, filing 0001209191-21-060490
2021-10-13 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 20,929 disposed 27.13 567,803.77 Form 4, filing 0001209191-21-060490
2021-10-12 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 8,521 disposed 27.09 230,833.89 Form 4, filing 0001209191-21-060490
2021-10-11 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 48,812 disposed 27.24 1,329,638.88 Form 4, filing 0001209191-21-060236
2021-10-08 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 2,032 disposed 27.01 54,884.32 Form 4, filing 0001209191-21-060236
2021-10-07 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 1,149 disposed 27.00 31,023.00 Form 4, filing 0001209191-21-060236
2021-10-04 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 20,711 disposed 27.06 560,439.66 Form 4, filing 0001209191-21-059426
2021-10-01 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 6,855 disposed 27.00 185,085.00 Form 4, filing 0001209191-21-059426
2021-09-30 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 2,292 disposed 27.00 61,884.00 Form 4, filing 0001209191-21-058209
2021-09-28 iTeos Therapeutics, Inc.
ITOS 		S, Open-market sale 19,214 disposed 27.00 518,778.00 Form 4, filing 0001209191-21-058209

This column is intentionally blank

No transaction line is stored for this reporting owner, though the catalog holds filings naming them. That happens when the filings report only holdings or only positions the store does not carry, and when a parse failed; each filing page states its own parse status.

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Codes on this page
P, Open-market purchase
Open-market purchase
S, Open-market sale
Open-market sale

Every value is as reported on the Form 4. A price the filing did not report is marked Not reported and no value is computed from it. Codes outside the open market, drawn in grey behind a dashed rule, are compensation and administrative machinery rather than a decision to trade at the prevailing price.

What this insider's stored lines contain

No transaction line is stored for this entity, so there is nothing to break down by code. The catalog holds its filings; what it does not hold is a single reportable line from them, which is a fact about the parse and about these filings, not about the entity.

How to cite this page

ebomi catalog. MPM BIOVENTURES 2018 (B), L.P., insider transactions. Retrieved 2026-08-20 from https://ebomi.com/insider/0001729504

Balogh, A. Insider trading. Scientific Data 10, 237 (2023) doi:10.1038/s41597-023-02147-6

This page as JSON The JSON twin is shaped by the same read model as this page, so the two cannot disagree. Its envelope carries the canonical URL, the retrieval time, the coverage claim, and the licence statement.