STOCK TITAN

Old Second Bancorp (OSBC) CEO sells 55,687 shares in Rule 10b5-1 plan

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Form Type
4

Rhea-AI Filing Summary

Old Second Bancorp, Inc. Chairman and CEO James Eccher reported selling 55,687 shares of common stock on August 11, 2026 at a weighted average price of $25.4595 per share, with trades ranging from $25.30 to $25.6050. The sales were effected under a Rule 10b5-1 trading plan adopted on May 1, 2026. Following the sale, he reported 322,712 directly held shares, additional indirect holdings of 33,498 shares via a 401(k) and 6,378 via a profit-sharing plan, and 188,252 Restricted Stock Units.

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Insider Eccher James
Role CHAIRMAN AND CEO
Sold 55,687 shs ($1.42M)
Type Security Shares Price Value
Sale Old Second Bancorp, Inc. Common Stock F1, F2 55,687 $25.4595 $1.42M
holding Old Second Bancorp, Inc. Common Stock -- -- --
holding Old Second Bancorp, Inc. Common Stock -- -- --
holding Restricted Stock Units -- -- --
Holdings After Transaction: Old Second Bancorp, Inc. Common Stock — 322,712 shares (Direct); Old Second Bancorp, Inc. Common Stock — 33,498 shares (Indirect, By 401-K); Old Second Bancorp, Inc. Common Stock — 6,378 shares (Indirect, By Profit Sharing); Restricted Stock Units — 188,252 shares (Direct)
Footnotes (2)
  1. F1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 1, 2026.
  2. F2. The price reported is a weighted average price. The transactions were effected at prices ranging from $25.30 to $25.6050.
Shares sold 55,687 shares Sale of Old Second Bancorp, Inc. common stock on August 11, 2026
Weighted average sale price $25.4595 per share Reported sale price for 55,687 shares, with trades in a specified range
Sale price range $25.30 to $25.6050 Price range at which the reported sales were effected
Direct holdings after sale 322,712 shares Directly owned Old Second Bancorp, Inc. common stock following the transaction
Indirect 401(k) holdings 33,498 shares Shares held indirectly by 401-K after the reported transaction date
Indirect profit-sharing holdings 6,378 shares Shares held indirectly by Profit Sharing after the reported transaction date
Restricted Stock Units held 188,252 units Restricted Stock Units reported as directly held after the transaction
Rule 10b5-1 plan adoption date May 1, 2026 Adoption date of the trading plan under which the sales were effected
Rule 10b5-1 trading plan regulatory
"The sales reported ... were effected pursuant to a Rule 10b5-1 trading plan"
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
weighted average price financial
"The price reported is a weighted average price."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
Restricted Stock Units financial
"Security title is reported as Restricted Stock Units."
Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

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

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FAQ

What did OSBC Chairman and CEO James Eccher report in this Form 4?

James Eccher reported a sale of 55,687 Old Second Bancorp (OSBC) shares on August 11, 2026 at a weighted average price of $25.4595 per share, executed under a Rule 10b5-1 trading plan.

At what prices were James Eccher’s OSBC shares sold on August 11, 2026?

The reported 55,687 OSBC shares were sold at a weighted average price of $25.4595, with individual trades executed in a price range from $25.30 to $25.6050, according to the Form 4 footnote disclosure.

Was James Eccher’s OSBC stock sale under a Rule 10b5-1 trading plan?

Yes. The Form 4 states the sales were made pursuant to a Rule 10b5-1 trading plan adopted by James Eccher on May 1, 2026, indicating the transactions were pre-arranged under that plan.

How many OSBC shares does James Eccher hold directly after this transaction?

After the August 11, 2026 sale, James Eccher reported 322,712 shares of Old Second Bancorp (OSBC) common stock held in direct ownership, in addition to various indirect holdings and Restricted Stock Units.

What indirect OSBC holdings does James Eccher report after the sale?

Post-transaction, James Eccher reports 33,498 OSBC shares held indirectly via a 401(k) plan and 6,378 shares held indirectly via a profit-sharing plan, along with separate holdings of 188,252 Restricted Stock Units.
SEC Form 4
FORM 4UNITED 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).
X
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*
Eccher James

(Last)(First)(Middle)
37 S. RIVER ST.

(Street)
AURORA ILLINOIS 60506

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
OLD SECOND BANCORP INC [ OSBC ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
CHAIRMAN AND CEO
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
08/11/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Old Second Bancorp, Inc. Common Stock08/11/2026S(1)55,687D$25.4595(2)322,712D
Old Second Bancorp, Inc. Common Stock33,498IBy 401-K
Old Second Bancorp, Inc. Common Stock6,378IBy Profit Sharing
Restricted Stock Units188,252D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 1, 2026.
2. The price reported is a weighted average price. The transactions were effected at prices ranging from $25.30 to $25.6050.
/s/ Shirley Cantrell, Attorney-in-Fact08/12/2026
** Signature of Reporting PersonDate
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)