Star Bulk (SBLK) strategy chief now holds 55,778 shares

Rhea-AI Filing Summary

Star Bulk Carriers Corp. (SBLK) reported that Chief Strategy Officer Charis Plakantonaki sold 10,825 common shares on August 17, 2026 in an open-market or private transaction at an average price of $29.82 per share. Following this sale, the executive directly holds 55,778 common shares of the company.

Insider Trade Summary

Net Seller: 10,825 shares

Net Sell 1 txn

Insider Plakantonaki Charis

Role Chief Strategy Officer

Sold 10,825 shs ($323K)

Type	Security	Shares	Price	Value
Sale	Common shares par value $ 0.01 per share	10,825	$29.8201	$323K

Holdings After Transaction: Common shares par value $ 0.01 per share — 55,778 shares (Direct)

Key Figures

Shares sold: 10,825 shares Sale price: $29.8201 per share Shares owned after transaction: 55,778 shares +1 more

4 metrics

Shares sold 10,825 shares Common shares sold on August 17, 2026 by Chief Strategy Officer

Sale price $29.8201 per share Average sale price for the 10,825 common shares

Shares owned after transaction 55,778 shares Direct ownership by Charis Plakantonaki following the sale

Net shares sold 10,825 shares Net sell position from transactionSummary netBuySellShares

Key Terms

Form 4, open market or private transaction, beneficial ownership

3 terms

Form 4 regulatory

"INSIDER FILING DATA (Form 4)"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

open market or private transaction market

"transaction_code_description: "Sale in open market or private transaction""

beneficial ownership financial

"transactionSummary includes netBuySellShares affecting beneficial ownership"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

FAQ

What insider transaction did SBLK report for Chief Strategy Officer Charis Plakantonaki?

SBLK reported that Charis Plakantonaki sold 10,825 common shares on August 17, 2026 at an average price of $29.82 per share, in an open-market or private transaction.

At what price were the Star Bulk Carriers Corp. (SBLK) shares sold in this Form 4?

The reported sale price was an average of $29.82 per share for 10,825 SBLK common shares, categorized as a sale in an open-market or private transaction.

How many SBLK shares did the insider sell in the August 17, 2026 transaction?

The insider sold 10,825 common shares of SBLK on August 17, 2026, as disclosed in the Form 4, with the transaction classified as a sale in an open-market or private transaction.

How many Star Bulk Carriers (SBLK) shares does Charis Plakantonaki own after this sale?

After the reported sale, Charis Plakantonaki directly owns 55,778 common shares of SBLK, according to the post-transaction holdings figure disclosed in the Form 4 filing.

Was the SBLK insider sale made under a Rule 10b5-1 trading plan?

The filing indicates the Rule 10b5-1 checkbox is not affirmed (set to false), which means the transaction is not reported as made pursuant to a Rule 10b5-1 trading plan.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/19/2026 - 06:29 AM Accepted by SEC EDGAR 08/19/2026 - 06:28 AM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Plakantonaki Charis

(Last) (First) (Middle)

57 PANAGIOTOU ANAGNOSTOPOULOU

(Street)

ATHENS 10672

(City) (State) (Zip)

GREECE

(Country)

2. Issuer Name and Ticker or Trading Symbol
Star Bulk Carriers Corp. [ SBLK ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Strategy Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/17/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common shares par value $ 0.01 per share	08/17/2026		S		10,825	D	$29.8201	55,778	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

	Charis Plakantonaki	08/19/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)