Iterum Therapeutics plc (ITRM) - Dilution Analysis

Visualizing historical and potential share dilution over time

Dilution Analysis

Medium Risk
Moderate dilution risk
Last updated: November 14, 2025

Risk Assessment Details

Potential Dilution: 0.0% of current shares
Recent Dilution: 114.34% (2 years)
Historical Dilution Factor: significant recent dilution
Outstanding Shares
46M
Potential Supply
0
Additional shares possible
Splits
None
Past 2 years

Summary

ITRM currently has 45.8M outstanding shares. with minimal authorized share overhang for future dilution. The company has significantly diluted shareholders by 114.34% over the past 2 years, indicating aggressive capital raising.

Share Structure Timeline

Outstanding Shares
Total Supply

Historical Data Points

Date Event Outstanding Supply
Nov 14, 2025

10-Q filing | 45.8M shares outstanding

46M 0
Aug 05, 2025

10-Q filing | 44.7M shares outstanding

45M 0
May 13, 2025

10-Q filing | 40.0M shares outstanding

40M 0
Feb 07, 2025

10-K filing | 34.6M shares outstanding

35M 0
Feb 07, 2025

S-3 filing: Iterum Therapeutics PLC may offer and sell, from time to time, securities up to an aggregate offering price of $150,000,000.

28M 0
Nov 14, 2024

10-Q filing | 27.5M shares outstanding

28M 0
Aug 14, 2024

10-Q filing | 22.7M shares outstanding

23M 0
Aug 09, 2024

POS AM filing: This POS AM filing deregisters unsold securities from a previous offering, specifically 2,381,835 units, consisting of ordinary shares, 1-year warrants, 5-year warrants, and warrant shares that were registered but unsold.

17M 0
Jul 17, 2024

S-1/A filing: Iterum Therapeutics PLC is conducting a rights offering to holders of its ordinary shares and eligible warrant holders to purchase Units, with each unit consisting of one ordinary share, a 1-year warrant to purchase 0.50 ordinary shares at an exercise price of $1.21, and a 5-year warrant to purchase one ordinary share at an exercise price of $1.21, for aggregate gross proceeds of approximately $10.3 million.

17M 0
Jun 26, 2024

S-1/A filing: Iterum Therapeutics plc is distributing non-transferable subscription rights to purchase Units, with each unit consisting of one ordinary share, a 1-year warrant to purchase 0.5 ordinary shares, and a 5-year warrant to purchase one ordinary share, to holders of ordinary shares and eligible warrant holders.

17M 0
Jun 26, 2024

8-K filing: Iterum Therapeutics plc announced a proposed rights offering to distribute subscription rights to purchase an aggregate of 8,503,800 units at a subscription price of $1.21 per unit. ($0.0M proceeds)

16M 0
Jun 07, 2024

S-1 filing: Iterum Therapeutics PLC is offering subscription rights to purchase Units, consisting of ordinary shares and warrants, to holders of its ordinary shares and eligible warrant holders, with the offering managed by Maxim Group LLC as dealer-manager.

16M 0
May 13, 2024

10-Q filing | 15.4M shares outstanding

15M 0
Mar 28, 2024

10-K filing | 16.4M shares outstanding

16M 0
Nov 14, 2023

10-Q filing | 13.0M shares outstanding

13M 0
Aug 11, 2023

10-Q filing | 12.9M shares outstanding

13M 0
May 12, 2023

10-Q filing | 12.7M shares outstanding

13M 0
Mar 16, 2023

10-K filing | 12.2M shares outstanding

12M 0
Nov 10, 2022

10-Q filing | 12.2M shares outstanding

12M 0
Oct 07, 2022

S-3 filing: The company is offering ordinary shares through an at-the-market offering, with H.C. Wainwright & Co., LLC acting as the sales agent, for an aggregate offering price of up to $16,000,000, not to exceed 4,478,180 ordinary shares.

12M 0
Aug 17, 2022
Stock Split

8-K filing: Stock split 1-for-15 | Outstanding: 183,364,740 → 12,224,316

12M 0
Aug 12, 2022

10-Q filing | 183.4M shares outstanding

180M 0
May 13, 2022

10-Q filing | 183.4M shares outstanding

180M 0
Mar 28, 2022

10-K filing | 182.8M shares outstanding

180M 0
Nov 12, 2021

10-Q filing | 182.7M shares outstanding

180M 0
Aug 13, 2021

10-Q filing | 180.0M shares outstanding

180M 0
May 14, 2021

10-Q filing | 179.1M shares outstanding

180M 0
Mar 12, 2021

10-K filing | 176.5M shares outstanding

180M 0
Nov 16, 2020

10-Q filing | 43.0M shares outstanding

43M 1.5M
Oct 22, 2020

S-1/A filing: The company is offering ordinary shares and warrants, as well as pre-funded warrants and warrants, with the net proceeds intended to support the planned NDA submission for oral sulopenem and for working capital and general corporate purposes.

34M 10M
Oct 21, 2020

S-1/A filing: The company is offering 13,407,821 ordinary shares and warrants to purchase ordinary shares, as well as pre-funded warrants to purchase ordinary shares and warrants, with the net proceeds to be used for NDA submission, clinical development, working capital, and general corporate purposes.

35M 24M
Oct 09, 2020

S-1 filing: The company is filing an S-1 to offer ordinary shares, warrants, and pre-funded warrants, with the intention to use the net proceeds to support the NDA submission for oral sulopenem for the treatment of uUTI, continued clinical development of sulopenem, and for working capital and general corporate purposes.

21M 0
Oct 05, 2020

S-1/A filing: This S-1/A filing relates to an offering of 6.500% Exchangeable Senior Subordinated Notes due 2025, Limited Recourse Royalty-Linked Subordinated Notes, and ordinary shares offered by selling shareholders.

25M 0
Sep 22, 2020

S-1 filing: This S-1 filing includes the offering of 6.500% Exchangeable Senior Subordinated Notes due 2025, Limited Recourse Royalty-Linked Subordinated Notes, and Ordinary Shares by selling shareholders.

25M 0
Aug 13, 2020

S-1 filing: S-1 filing for ordinary shares offered by selling shareholders.

25M 0
Aug 11, 2020

8-K filing: Iterum Therapeutics plc announced that it had commenced its previously announced rights offering for up to 8,400 units at $1,000 per unit, each unit consisting of Exchangeable Senior Subordinated Notes and Limited Recourse Royalty-Linked Subordinated Notes. ($8.4M proceeds)

25M 0
Aug 06, 2020

10-Q filing | 21.2M shares outstanding

21M 0
Aug 06, 2020

S-1/A filing: Iterum Therapeutics is distributing non-transferable subscription rights to purchase units consisting of Exchangeable Senior Subordinated Notes and Limited Recourse Royalty-Linked Notes, with the rights expiring on August 31, 2020, unless extended.

25M 0
Jun 15, 2020

8-K filing: On June 10, 2020, Iterum Therapeutics plc shareholders approved an amendment to the Company's 2018 Equity Incentive Plan to increase the number of ordinary shares authorized for issuance under the plan by 2,250,000.

15M 0
May 14, 2020

10-Q filing | 14.9M shares outstanding

15M 0
Apr 30, 2020

S-1/A filing: Iterum Therapeutics is conducting a rights offering to distribute non-transferable subscription rights to purchase units consisting of Exchangeable Senior Subordinated Notes and Limited Recourse Royalty-Linked Notes.

15M 0
Apr 09, 2020

S-1/A filing: Iterum Therapeutics is conducting a rights offering to distribute non-transferable subscription rights to purchase units consisting of Exchangeable Senior Subordinated Notes and Royalty-Linked Notes.

15M 0
Mar 20, 2020

S-1 filing: Iterum Therapeutics is conducting a rights offering to distribute non-transferable subscription rights to purchase units consisting of Exchangeable Senior Subordinated Notes and Royalty-Linked Notes.

15M 0
Mar 12, 2020

10-K filing | 14.9M shares outstanding

15M 0
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