Company

CITY THERAPEUTICS, INC.

CTY · CIK 0002143850

SEC FORM 4

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CITY THERAPEUTICS, INC. (CTY)

Acquisition (code C) of 610,759 shares; price not stated (see filing).

Reporting Person MARAGANORE JOHN · Transaction Code C

Traded Oct 19, 2026 · Disclosed Oct 19, 2026

Source: SEC Form 4 · 0001104659-26-116963 · filed 2026-10-19 · View filing →

SEC FORM 4

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CITY THERAPEUTICS, INC. (CTY)

Acquisition (code C) of 3,294,900 shares; price not stated (see filing).

Reporting Person NELSEN ROBERT · Transaction Code C

Traded Oct 19, 2026 · Disclosed Oct 19, 2026

Source: SEC Form 4 · 0001104659-26-116965 · filed 2026-10-19 · View filing →

SEC FORM 4

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CITY THERAPEUTICS, INC. (CTY)

Acquisition (code C) of 5,482,309 shares; price not stated (see filing).

Reporting Person NELSEN ROBERT · Transaction Code C

Traded Oct 19, 2026 · Disclosed Oct 19, 2026

Source: SEC Form 4 · 0001104659-26-116965 · filed 2026-10-19 · View filing →

SEC FORM 4

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CITY THERAPEUTICS, INC. (CTY)

Acquisition (code C) of 2,027,006 shares; price not stated (see filing).

Reporting Person NELSEN ROBERT · Transaction Code C

Traded Oct 19, 2026 · Disclosed Oct 19, 2026

Source: SEC Form 4 · 0001104659-26-116965 · filed 2026-10-19 · View filing →

SEC FORM 4

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CITY THERAPEUTICS, INC. (CTY)

Acquisition (code C) of 3,294,900 shares; price not stated (see filing).

Reporting Persons ARCH Venture Partners XII, LLC · ARCH Venture Partners XII, L.P. · ARCH Venture Fund XII, L.P. · CRANDELL KEITH · Burow Kristina · GILLIS STEVEN · Transaction Code C

Traded Oct 19, 2026 · Disclosed Oct 19, 2026

Source: SEC Form 4 · 0001104659-26-116966 · filed 2026-10-19 · View filing →

SEC FORM 4

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CITY THERAPEUTICS, INC. (CTY)

Acquisition (code C) of 5,482,309 shares; price not stated (see filing).

Reporting Persons ARCH Venture Partners XII, LLC · ARCH Venture Partners XII, L.P. · ARCH Venture Fund XII, L.P. · CRANDELL KEITH · Burow Kristina · GILLIS STEVEN · Transaction Code C

Traded Oct 19, 2026 · Disclosed Oct 19, 2026

Source: SEC Form 4 · 0001104659-26-116966 · filed 2026-10-19 · View filing →

SEC FORM 4

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CITY THERAPEUTICS, INC. (CTY)

Acquisition (code C) of 2,027,006 shares; price not stated (see filing).

Reporting Persons ARCH Venture Partners XII, LLC · ARCH Venture Partners XII, L.P. · ARCH Venture Fund XII, L.P. · CRANDELL KEITH · Burow Kristina · GILLIS STEVEN · Transaction Code C

Traded Oct 19, 2026 · Disclosed Oct 19, 2026

Source: SEC Form 4 · 0001104659-26-116966 · filed 2026-10-19 · View filing →

SEC FORM 4CLUSTER · 2 INSIDERS

$6,120,000.00

CITY THERAPEUTICS, INC. (CTY)

Purchase of 340,000 shares across 2 reporting persons.

Transaction Code P · Reporting Persons 2

NELSEN ROBERTPurchase of 170,000 shares at $18 per share.$3,060,000.00
ARCH Venture Partners XII, LLCPurchase of 170,000 shares at $18 per share.$3,060,000.00

Surfaced by rule: 2 distinct insiders, open-market purchases, 7-day window — a deterministic filter, not a recommendation.

Traded Oct 19, 2026 · Disclosed Oct 19, 2026

Source: SEC Form 4 · 0001104659-26-116965 · filed 2026-10-19 · View filing →

Source: SEC Form 4 · 0001104659-26-116966 · filed 2026-10-19 · View filing →

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