LanzaTech Global, Inc. (LNZA) - Dilution Analysis

Visualizing historical and potential share dilution over time

Dilution Analysis

High Risk
Significant dilution risk
Last updated: May 14, 2026

Risk Assessment Details

Potential Dilution: 1.86% of current shares
Recent Dilution: 9655.52% (2 years)
Historical Dilution Factor: significant recent dilution
Outstanding Shares
10M
Potential Supply
190K
Additional shares possible
Splits
1 Split 1 Reverse
Past 2 years

Summary

LNZA currently has 10.1M outstanding shares. with limited dilution risk as only 187K additional shares (1.9%) are authorized for issuance. The company has significantly diluted shareholders by 9655.52% over the past 2 years, indicating aggressive capital raising. Recent corporate actions include 1 stock split (positive for accessibility) and 1 reverse split (concerning signal).

Share Structure Timeline

Outstanding Shares
Total Supply

Historical Data Points

Date Event Outstanding Supply
May 14, 2026

10-Q filing | 10.1M shares outstanding

10M 190K
Mar 31, 2026

10-K filing | 10.1M shares outstanding

10M 190K
Nov 19, 2025

10-Q filing | 2.3M shares outstanding

2.3M 190K
Oct 22, 2025

8-K filing: LanzaTech Global, Inc. entered into a Second Amended and Restated Investment Agreement with LanzaJet Investment Parties, which includes the issuance of two tranches of 15,000,000 LanzaJet shares to LanzaTech.

220M 190K
Aug 19, 2025

10-Q filing | 218.1M shares outstanding

220M 190K
Aug 18, 2025
Stock Split

8-K filing: Stock split 1-for-100 | Outstanding: 231,964,989 → 2,319,649

2.3M 190K
Jun 03, 2025

8-K filing: LanzaTech Global, Inc. amended its Series A Convertible Senior Preferred Stock Purchase Agreement with LanzaTech Global SPV, LLC, extending the date to issue warrants for 780,000,000 shares of common stock and modifying certain terms related to a subsequent financing. ($40.0M proceeds)

230M 19M
May 19, 2025

10-Q filing | 232.0M shares outstanding

230M 19M
May 09, 2025

8-K filing: LanzaTech Global, Inc. entered into a Series A Convertible Senior Preferred Stock Purchase Agreement to issue preferred stock and warrants, and plans a reverse stock split pending stockholder approval. ($40.0M proceeds)

200M 19M
Apr 15, 2025

10-K filing | 197.6M shares outstanding

200M 19M
Nov 08, 2024

10-Q filing | 197.8M shares outstanding

200M 19M
Oct 29, 2024

POS AM filing: This POS AM filing terminates the effectiveness of the Original Registration Statement and deregisters all Registered Securities that remain unsold under the Original Registration Statement. Such Registered Securities are to be registered under the New Registration Statement, once it is declared effective by the SEC.

200M 19M
Oct 11, 2024

S-3/A filing: This S-3/A filing includes information about the issuance and resale of common stock and warrants of LanzaTech, Inc.

200M 250M
Aug 08, 2024

10-Q filing | 197.7M shares outstanding

200M 250M
Jun 20, 2024

8-K filing: LanzaTech Global, Inc. increased its ownership position in LanzaJet, Inc. by receiving the first of three tranches of shares, increasing ownership to approximately 36% from approximately 23%.

200M 250M
May 09, 2024

10-Q filing | 197.0M shares outstanding

200M 250M
May 09, 2024

S-3 filing: This is an S-3 filing for the issuance and resale of common stock and warrants, including shares issuable upon exercise of warrants and conversion of convertible securities.

200M 250M
Apr 19, 2024

POS AM filing: This POS AM filing relates to the issuance of common stock upon exercise of warrants and options and conversion of SAFE, and resale of common stock and warrants by selling stockholders.

200M 19M
Apr 05, 2024

POS AM filing: This POS AM filing relates to the issuance of common stock upon exercise of warrants/options and resale of common stock and warrants by selling stockholders.

200M 19M
Mar 14, 2024

POS AM filing: This POS AM filing from 2024-03-14 relates to the issuance of up to 23,403,989 shares of common stock and the resale of up to 203,436,682 shares of common stock and 8,857,762 warrants by selling stockholders.

200M 19M
Feb 29, 2024

10-K filing | 196.6M shares outstanding

200M 19M
Dec 18, 2023

POS AM filing: This POS AM filing relates to the issuance of common stock upon exercise of warrants and options, conversion of SAFE agreements, and resale of common stock and warrants by selling stockholders.

200M 19M
Nov 13, 2023

10-Q filing | 195.9M shares outstanding

200M 250M
Aug 09, 2023

10-Q filing | 195.5M shares outstanding

200M 250M
May 22, 2023

S-1/A filing: This S-1/A filing includes the issuance by the company of up to 23,403,989 shares of common stock and also covers the offer and sale from time to time by the selling stockholders of up to 4,774,276 Private Placement Warrants, up to 4,083,486 Shortfall Warrants, and up to 203,436,682 shares of common stock.

200M 250M
May 15, 2023

10-Q filing | 195.5M shares outstanding

200M 250M
May 05, 2023

S-1/A filing: This S-1/A filing, dated 2023-05-05, relates to the issuance by the company of up to 23,403,989 shares of common stock and the offer and sale from time to time by the selling stockholders of up to 203,436,682 shares of common stock and 8,857,762 warrants to purchase common stock.

200M 250M
Mar 29, 2023

S-1/A filing: This S-1/A filing registers the issuance of up to 23,332,959 shares of common stock upon exercise/conversion of warrants, options and a SAFE, and the resale of up to 203,371,061 shares of common stock and 8,857,762 warrants by selling stockholders.

200M 250M
Mar 29, 2023

10-K filing | 3.8M shares outstanding

3.8M 250M
Feb 13, 2023

S-1 filing: This S-1 filing registers the issuance of common stock upon exercise/conversion of warrants, SAFE, and options, and the resale of common stock and warrants by selling stockholders.

200M 240M
Feb 07, 2023

8-K filing: AMCI Acquisition Corp. II entered into subscription agreements to issue and sell 500,000 shares of Class A common stock at $10.00 per share in a private placement, as part of a larger PIPE Investment totaling $185,000,000. ($5.0M proceeds)

3.8M 19M
Feb 06, 2023

8-K filing: AMCI Acquisition Corp. II entered into a Forward Purchase Agreement with ACM ARRT H LLC for an over-the-counter Equity Prepaid Forward Transaction, where the Seller may purchase up to 10,000,000 Class A common shares of AMCI before the closing of the Business Combination.

3.8M 19M
Nov 14, 2022

10-Q filing | 3.8M shares outstanding

3.8M 19M
Oct 24, 2022

8-K filing: AMCI Acquisition Corp. II entered into subscription agreements with PIPE Investors to issue and sell 5,500,000 shares of Class A common stock at $10.00 per share, representing an additional PIPE investment to satisfy the Minimum Closing Cash Condition. ($55.0M proceeds)

3.8M 19M
Aug 15, 2022

10-Q filing | 3.8M shares outstanding

3.8M 19M
May 17, 2022

10-Q filing | 3.8M shares outstanding

3.8M 19M
Mar 25, 2022

10-K filing | 3.8M shares outstanding

3.8M 19M
Nov 22, 2021

10-Q filing | 3.8M shares outstanding

3.8M 19M
Sep 17, 2021

10-Q filing | 4.1M shares outstanding

4.1M 19M
Aug 12, 2021

8-K filing: AMCI Acquisition Corp. II consummated its initial public offering of 15,000,000 units at $10.00 per Unit, generating gross proceeds of $150,000,000, and completed a private sale of 3,500,000 warrants to AMCI Sponsor II LLC at $1.00 per warrant, generating gross proceeds of $3,500,000. ($153.5M proceeds)

4.3M 19M
Aug 06, 2021

8-K filing: AMCI Acquisition Corp. II consummated its initial public offering of 15,000,000 units at $10.00 per unit, generating gross proceeds of $150,000,000, and completed a private sale of 3,500,000 warrants to the Sponsors at $1.00 per warrant, generating gross proceeds of $3,500,000. ($153.5M proceeds)

4.3M 19M
Jul 22, 2021

S-1/A filing: Initial public offering of units, each consisting of one share of Class A common stock and one-half of one redeemable warrant, with an offering price of $10.00 per unit.

4.3M 19M
Jun 14, 2021

S-1/A filing: This is an S-1/A filing for an initial public offering of units, each consisting of one share of Class A common stock and one-half of one redeemable warrant, along with private placement warrants.

4.3M 19M
Apr 05, 2021

S-1/A filing: AMCI Acquisition Corp. II is offering 17,500,000 units at $10.00 per unit, each unit consists of one share of Class A common stock and one-half of one redeemable warrant.

5M 21M
Mar 15, 2021

S-1/A filing: AMCI Acquisition Corp. II is offering 17,500,000 units at $10.00 per unit for a total offering of $175,000,000.

5M 20M
Feb 12, 2021

S-1 filing: AMCI Acquisition Corp. II is offering 17,500,000 units at $10.00 per unit, each unit consisting of one share of Class A common stock and one-third of one redeemable warrant.

5M 20M
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