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Company

Atrium Therapeutics, Inc.

RNA · CIK 0002093101

SEC FORM 4
$74,464.00

Atrium Therapeutics, Inc. (RNA)

Disposition (code F) of 8,320 shares at $8.95 per share.

Reporting Person Hoyos Rocio Martin · Officer Title Chief Strategy Officer · Transaction Code F

Traded Sep 18, 2026 · Disclosed Sep 22, 2026

Source: SEC Form 4 · 0001193125-26-397936 · filed 2026-09-22 · View filing →

SEC FORM 4
$60,340.90

Atrium Therapeutics, Inc. (RNA)

Disposition (code F) of 6,742 shares at $8.95 per share.

Reporting Person Winslow Brendan R. · Officer Title Chief Financial Officer · Transaction Code F

Traded Sep 18, 2026 · Disclosed Sep 22, 2026

Source: SEC Form 4 · 0001193125-26-397941 · filed 2026-09-22 · View filing →

SEC FORM 4
$104,106.40

Atrium Therapeutics, Inc. (RNA)

Disposition (code F) of 11,632 shares at $8.95 per share.

Reporting Person Gallagher Kathleen P. · Officer Title See Remarks · Transaction Code F

Traded Sep 18, 2026 · Disclosed Sep 22, 2026

Source: SEC Form 4 · 0001193125-26-397944 · filed 2026-09-22 · View filing →

SEC FORM 4
$21,256.25

Atrium Therapeutics, Inc. (RNA)

Disposition (code F) of 2,375 shares at $8.95 per share.

Reporting Person Kenney Stephanie · Officer Title See Remarks · Transaction Code F

Traded Sep 18, 2026 · Disclosed Sep 22, 2026

Source: SEC Form 4 · 0001193125-26-397948 · filed 2026-09-22 · View filing →

SEC FORM 4
$1,131,441.10

Atrium Therapeutics, Inc. (RNA)

Disposition (code F) of 126,418 shares at $8.95 per share.

Reporting Person Boyce Sarah · Transaction Code F

Traded Sep 18, 2026 · Disclosed Sep 22, 2026

Source: SEC Form 4 · 0001193125-26-397951 · filed 2026-09-22 · View filing →

SEC FORM 4
$204,167.40

Atrium Therapeutics, Inc. (RNA)

Disposition (code F) of 22,812 shares at $8.95 per share.

Reporting Person Flanagan W. Michael · Transaction Code F

Traded Sep 18, 2026 · Disclosed Sep 22, 2026

Source: SEC Form 4 · 0001193125-26-397955 · filed 2026-09-22 · View filing →

SEC FORM 4
$192,058.05

Atrium Therapeutics, Inc. (RNA)

Disposition (code F) of 21,459 shares at $8.95 per share.

Reporting Person Hughes Steven George · Officer Title Chief Medical Officer · Transaction Code F

Traded Sep 18, 2026 · Disclosed Sep 22, 2026

Source: SEC Form 4 · 0001193125-26-397967 · filed 2026-09-22 · View filing →

SEC FORM 4
$100,383.20

Atrium Therapeutics, Inc. (RNA)

Disposition (code F) of 11,216 shares at $8.95 per share.

Reporting Person Younis Husam · Officer Title Chief Scientific Officer · Transaction Code F

Traded Sep 18, 2026 · Disclosed Sep 22, 2026

Source: SEC Form 4 · 0001193125-26-397971 · filed 2026-09-22 · View filing →