AKTS insider transaction filings

Aktis Oncology, Inc. — 12 most recent Form 4 filings from SEC EDGAR, normalized by FilingPulse. Latest filing: 2026-07-21. Screen AKTS transaction legs live →

FiledFormInsiderReported transactionsSource
2026-07-214Herrmann Ken — DirectorOption exercise (M): 3,506 @ $0.08 · Option exercise (M): 1,350 @ $1.91 · Sale (S): 3,506 @ $24.56 · Sale (S): 1,350 @ $24.56 · Option exercise (M): 3,506 (derivative) @ $0 · Option exercise (M): 1,350 (derivative) @ $0EDGAR
2026-07-204Herrmann Ken — DirectorOption exercise (M): 3,065 @ $0.08 · Sale (S): 3,065 @ $25.21 · Option exercise (M): 3,065 (derivative) @ $0EDGAR
2026-07-104Ron-Bigger Shulamit — Chief Operating OfficerOption exercise (M): 50,000 @ $3.66 · Sale (S): 15,800 @ $27.13 · Sale (S): 30,000 @ $27.94 · Sale (S): 4,200 @ $28.75 · Option exercise (M): 50,000 (derivative) @ $0EDGAR
2026-07-104Czibere Akos — Chief Medical OfficerOption exercise (M): 50,000 @ $4.95 · Sale (S): 14,800 @ $27.13 · Sale (S): 30,829 @ $27.95 · Sale (S): 4,371 @ $28.71 · Option exercise (M): 50,000 (derivative) @ $0EDGAR
2026-04-164Gormley Glenn — DirectorGrant/award (A): 37,866 (derivative) @ $0EDGAR
2026-01-144Foley Todd — Director, 10% ownerConversion (C): 597,391 · Conversion (C): 2,688,270 · Conversion (C): 716,872 · Purchase (P): 232,870 @ $18 · Conversion (C): 2,272,727 (derivative) @ $0 · Conversion (C): 10,227,273 (derivative) @ $0 · +1 moreEDGAR
2026-01-144MPM BIOVENTURES 2018, L.P. — 10% owner
EVNIN LUKE — 10% owner
MPM BIOVENTURES 2018 (B), L.P. — 10% owner
MPM BioVentures 2018 LLC — 10% owner
MPM BioVentures 2018 GP LLC — 10% owner
MPM ASSET MANAGEMENT INVESTORS BV2018 LLC — 10% owner
MPM ONCOLOGY INNOVATIONS FUND LP — 10% owner
MPM Oncology Innovations Fund GP LLC — 10% owner
Conversion (C): 1,314,262 · Conversion (C): 5,914,197 · Conversion (C): 1,577,119 · Purchase (P): 1,112,777 @ $18 · Conversion (C): 5,000,000 (derivative) @ $0 · Conversion (C): 22,500,000 (derivative) @ $0 · +1 moreEDGAR
2026-01-144GADICKE ANSBERT — 10% owner
MPM ASSET MANAGEMENT LLC — 10% owner
Oncology Impact Private Investment Fund 2, L.P. — 10% owner
Conversion (C): 1,314,262 · Conversion (C): 5,914,197 · Conversion (C): 1,577,119 · Purchase (P): 1,112,777 @ $18 · Conversion (C): 5,000,000 (derivative) @ $0 · Conversion (C): 22,500,000 (derivative) @ $0 · +1 moreEDGAR
2026-01-124Vida Ventures II, LLC — 10% owner
VIDA VENTURES II-A, LLC — 10% owner
Conversion (C): 4,859,370 · Purchase (P): 812,455 @ $18 · Conversion (C): 134,842 · Purchase (P): 22,545 @ $18 · Conversion (C): 14,838,250 (derivative) @ $0 · Conversion (C): 411,750 (derivative) @ $0 · +2 moreEDGAR
2026-01-124Segal Lloyd Mitchell — DirectorConversion (C): 19,631 · Conversion (C): 50,000 (derivative) @ $0 · Conversion (C): 24,687 (derivative) @ $0EDGAR
2026-01-124EcoR1 Capital, LLC — Director
NODELMAN OLEG — Director
Conversion (C): 2,270,879 · Conversion (C): 202,862 · Conversion (C): 128,506 · Purchase (P): 2,077,779 @ $18 · Purchase (P): 144,443 @ $18 · Conversion (C): 9,913,810 (derivative) · +6 moreEDGAR
2026-01-124Kim Helen Susan — Director, 10% ownerConversion (C): 4,859,370 · Purchase (P): 812,455 @ $18 · Conversion (C): 134,842 · Purchase (P): 22,545 @ $18 · Conversion (C): 14,838,250 (derivative) @ $0 · Conversion (C): 411,750 (derivative) @ $0 · +2 moreEDGAR

Recent 8-K events — Aktis Oncology, Inc.

FiledFormItems reportedSource
2026-08-138-K2.02 — Results of Operations and Financial Condition
9.01 — Financial Statements and Exhibits
EDGAR
2026-05-118-K2.02 — Results of Operations and Financial Condition
9.01 — Financial Statements and Exhibits
EDGAR
2026-04-168-K5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers
7.01 — Regulation FD Disclosure
9.01 — Financial Statements and Exhibits
EDGAR
2026-03-308-K2.02 — Results of Operations and Financial Condition
9.01 — Financial Statements and Exhibits
EDGAR
2026-01-128-K5.03 — Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year
9.01 — Financial Statements and Exhibits
EDGAR
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