Sky Harbour Group Corp (SKYH) - 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: 229.06% of current shares
Recent Dilution: 36.82% (2 years)
Historical Dilution Factor: significant recent dilution
Outstanding Shares
34M
Potential Supply
78M
Additional shares possible
Splits
None
Past 2 years

Summary

SKYH currently has 34.1M outstanding shares. with significant dilution risk as 78M authorized shares could dilute existing holders by 229.1%. The company has significantly diluted shareholders by 36.82% over the past 2 years, indicating aggressive capital raising.

Share Structure Timeline

Outstanding Shares
Total Supply

Historical Data Points

Date Event Outstanding Supply
May 14, 2026

10-Q filing | 34.1M shares outstanding

34M 78M
Mar 19, 2026

10-K filing | 33.8M shares outstanding

34M 78M
Jan 27, 2026

8-K filing: Sky Harbour Group Corporation subsidiary, Sky Harbour LLC, issued a $10 million promissory note to Yorkville, and the Company issued 40,000 shares of Class A common stock to Yorkville in a registered direct offering.

34M 78M
Dec 15, 2025

8-K filing: Sky Harbour Group Corporation's subsidiary, Sky Harbour LLC, issued a $15 million promissory note to Yorkville, and in connection with the note, the Company issued 50,000 shares of Class A common stock to Yorkville in a registered direct offering.

34M 78M
Nov 12, 2025

10-Q filing | 33.9M shares outstanding

34M 78M
Aug 12, 2025

10-Q filing | 33.8M shares outstanding

34M 78M
May 13, 2025

10-Q filing | 33.7M shares outstanding

34M 78M
Mar 27, 2025

10-K filing | 33.5M shares outstanding

33M 78M
Jan 27, 2025

S-3 filing: This S-3 filing relates to the offer and resale from time to time of up to 7,911,580 shares of Class A common stock by the selling stockholders.

25M 78M
Dec 23, 2024

8-K filing: Sky Harbour Group Corporation sold and issued 3,955,790 shares of Common Stock to certain investors for an aggregate purchase price of $37,580,005.00 on December 20, 2024. ($112.74M proceeds)

25M 70M
Nov 12, 2024

10-Q filing | 25.1M shares outstanding

25M 70M
Oct 28, 2024

8-K filing: Sky Harbour Group Corporation completed the initial closing under the Purchase Agreement on October 25, 2024, issuing 3,955,790 shares of Class A Common Stock to investors for an aggregate purchase price of $37,580,005.00. ($37.58M proceeds)

25M 70M
Sep 17, 2024

8-K filing: Sky Harbour Group Corporation entered into a Securities Purchase Agreement to sell and issue up to 6,704,212 shares of Class A Common Stock in two closings for an aggregate purchase price of up to $63,690,014.00. ($63.69M proceeds)

25M 70M
Aug 13, 2024

10-Q filing | 24.7M shares outstanding

25M 70M
May 14, 2024

10-Q filing | 24.3M shares outstanding

24M 70M
Mar 27, 2024

10-K filing | 24.2M shares outstanding

24M 70M
Mar 27, 2024

S-3 filing: Sky Harbour Group Corporation is offering up to $100,000,000 of Class A Common Stock through an At Market Issuance Agreement with B. Riley Securities.

24M 70M
Mar 27, 2024

S-3 filing: This prospectus relates to the offer and resale from time to time of (a) up to 10,897,926 shares of Class A common stock and (b) up to 1,541,600 warrants to purchase shares of Class A Common Stock by the selling securityholders.

15M 70M
Nov 29, 2023

8-K filing: Sky Harbour Group Corporation sold 2,307,692 shares of Class A common stock and warrants to purchase 400,000 shares of Class A Common Stock for $15,000,000 on November 29, 2023. ($15.0M proceeds)

15M 50M
Nov 09, 2023

10-Q filing | 15.2M shares outstanding

15M 50M
Nov 02, 2023

8-K filing: Sky Harbour Group Corporation entered into a Securities Purchase Agreement to sell 6,586,154 shares of Class A Common Stock and warrants to purchase 1,141,600 shares for $42,810,000 in an initial closing on November 2, 2023, with a potential second closing for up to 2,307,692 additional shares and warrants to purchase 400,000 shares for up to $15,000,000. ($42.81M proceeds)

15M 50M
Aug 14, 2023

10-Q filing | 15.2M shares outstanding

15M 50M
May 12, 2023

10-Q filing | 15.1M shares outstanding

15M 50M
May 05, 2023

POS AM filing: This POS AM filing relates to the issuance of Class A common stock and warrants, as well as the resale of Class A common stock and warrants by selling securityholders.

15M 50M
Mar 24, 2023

10-K filing | 15.0M shares outstanding

15M 150M
Nov 10, 2022

10-Q filing | 14.9M shares outstanding

15M 150M
Sep 09, 2022

S-1 filing: This S-1 filing discusses a potential offering of Class A Common Stock to B. Riley Principal Capital II under a Purchase Agreement, subject to certain limitations and conditions, including beneficial ownership and exchange cap restrictions.

15M 150M
Aug 19, 2022

8-K filing: Sky Harbour Group Corporation entered into a Common Stock Purchase Agreement with B. Riley Principal Capital II, LLC, potentially allowing the Company to sell up to 10,000,000 shares of Class A common stock to B. Riley over a 36-month period, with the company issuing 25,000 commitment shares to B. Riley.

15M 150M
Aug 11, 2022

10-Q filing | 14.9M shares outstanding

15M 150M
May 17, 2022

S-1 filing: This prospectus relates to the issuance by us of up to an aggregate of 45,000,000 shares of our Class A common stock and also relates to the offer and sale from time to time by the selling securityholders named in this prospectus of up to 58,399,724 shares of Class A Common Stock.

15M 150M
May 12, 2022

10-Q filing | 14.9M shares outstanding

15M 50M
Apr 28, 2022

S-1/A filing: This S-1/A filing relates to the issuance of up to 14,519,218 shares of Class A common stock upon exercise of warrants and the offer and sale of up to 7,719,779 shares of Class A common stock issuable upon the exercise of Private Placement Warrants and 7,719,779 Private Placement Warrants by the selling securityholder.

15M 50M
Apr 22, 2022

S-1/A filing: This S-1/A filing relates to the issuance of Class A common stock upon exercise of warrants and the resale of Class A common stock and warrants by the selling securityholder.

15M 42M
Mar 28, 2022

S-1 filing: This S-1 filing registers the issuance of up to 14,519,218 shares of Class A common stock upon exercise of warrants, the offer and sale of up to 7,719,779 shares of Class A common stock issuable upon exercise of private placement warrants, and 7,719,779 private placement warrants by the selling securityholder.

15M 50M
Mar 28, 2022

10-K filing | 3.4M shares outstanding

3.4M 50M
Mar 11, 2022

8-K filing: Sky Harbour Group Corporation and ACM ARRT VII E LLC amended their Forward Purchase Agreement, with the Seller paying $6,734,602.01 to the Company and having purchased 664,909 Shares in the Forward Purchase Transaction.

3.4M 20M
Jan 31, 2022

8-K filing: The company completed a business combination on January 25, 2022, issuing unregistered securities including 4,500,000 shares of Class A common stock to Boston Omaha for $45.0 million, 5,500,000 shares of Class A common stock to BOC YAC Funding LLC upon conversion of series B preferred units in Sky for $55.0 million, and 42,192,250 shares of Class B Common Stock to the Existing Sky Equityholders. ($100.0M proceeds)

3.4M 20M
Jan 18, 2022

8-K filing: Yellowstone Acquisition Company entered into a Forward Purchase Agreement with ACM ARRT VII E LLC, where the seller intends to purchase up to 7,000,000 shares of Class A common stock and may acquire additional shares from the company in a private placement to reach 2,500,000 shares total, and the company will pay a Prepayment Amount to the seller after the closing of the Business Combination.

3.4M 20M
Dec 23, 2021

8-K filing: Boston Omaha Corporation, through its subsidiary BOC YAC Funding LLC, agreed to provide $45 million of PIPE financing by purchasing Yellowstone Class A common stock at $10.00 per share immediately prior to the closing of the proposed Business Combination. ($45.0M proceeds)

3.4M 20M
Nov 05, 2021

10-Q filing | 3.4M shares outstanding

3.4M 20M
Aug 06, 2021

10-Q filing | 3.4M shares outstanding

3.4M 20M
May 24, 2021

10-Q filing | 3.4M shares outstanding

3.4M 20M
Mar 12, 2021

10-K filing | 3.4M shares outstanding

3.4M 20M
Dec 07, 2020

8-K filing: Yellowstone Acquisition Company completed an IPO of 12,500,000 units at $10.00 per unit, generating gross proceeds of $125,000,000, and the underwriters exercised their over-allotment option purchasing 1,098,898 units at $10.00 per unit generating gross proceeds of $10,988,980. The company also completed private sales of warrants to BOC Yellowstone LLC for $7,500,000 and $219,779. ($143.71M proceeds)

N/A 20M
Dec 07, 2020

10-Q filing | 13.6M shares outstanding

14M 20M
Dec 01, 2020

8-K filing: Yellowstone Acquisition Company consummated the partial exercise of the underwriter's over-allotment option, selling 1,098,898 units at $10.00 per unit, generating gross proceeds of $10,988,980. ($11.21M proceeds)

N/A 20M
Oct 30, 2020

8-K filing: Yellowstone Acquisition Company consummated its initial public offering of 12,500,000 units at $10.00 per unit, generating gross proceeds of $125,000,000 and completed the private sale of 7,500,000 warrants to its sponsor at $1.00 per warrant, generating gross proceeds of $7,500,000. ($132.5M proceeds)

N/A 20M
Oct 26, 2020

8-K filing: Yellowstone Acquisition Company consummated an IPO of 12,500,000 units at $10.00 per unit, generating gross proceeds of $125,000,000, and a private placement of 7,500,000 private placement warrants at $1.00 per warrant, generating gross proceeds of $7,500,000. ($132.5M proceeds)

N/A 20M
Oct 20, 2020

S-1/A filing: Initial public offering of units, each consisting of one share of Class A common stock and one-half of one warrant, with an underwriter option to purchase additional units.

N/A 20M
Oct 19, 2020

S-1/A filing: Initial public offering of units, each consisting of one share of Class A common stock and one-half of one warrant, for a total offering of $150,000,000 by Yellowstone Acquisition Company, a newly organized blank check company.

N/A 20M
Oct 09, 2020

S-1/A filing: Initial public offering of 15,000,000 units at $10.00 per unit, each unit consisting of one share of Class A common stock and one-half of one warrant, by Yellowstone Acquisition Company.

N/A 15M
Sep 25, 2020

S-1 filing: Initial public offering of 20,000,000 units at $10.00 per unit, each unit consisting of one share of Class A common stock and one-half of one warrant.

N/A 32M
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