CoastalSouth Bancshares, Inc. (COSO) Insider Trading & SEC Filings
Last SEC filing
CoastalSouth Bancshares, Inc. (COSO) has filed 1 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-05-06. Insider sales over the same period: 1 transactions worth $118K. 2 Form 8-K material event filings were reported by COSO in the last 90 days. InsiderAlpha tracks every COSO SEC filing - Form 4, Form 144, and 8-K - in real time, including Rule 10b5-1 plan detection.
About CoastalSouth Bancshares, Inc. (COSO)
CoastalSouth Bancshares, Inc. trades under the ticker COSO. InsiderAlpha tracks 32 primary SEC Form 4 filings from 14 reporting insiders for COSO since 2025, sourced directly from SEC EDGAR.
| Sector | Financials insider trading |
|---|---|
| SIC classification | State Commercial Banks (SIC 6022) |
| SEC CIK | 0001297107 |
90-Day SEC Filing Activity
| Insider sales (90d) | 1 ($118K) |
|---|---|
| Form 4 filings (90d) | 1 |
| Form 8-K filings (90d) | 2 |
| Latest Form 4 filing | 2026-05-06 |
Recent COSO Insider Transactions (Form 4)
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Anthony P. Valduga | CFO AND COO | S - Open-market sale | 4.6K | $25.84 | $118K | SEC | |
| Anthony P. Valduga | CFO AND COO | G - Bona-fide gift | 2.0K | $0.00 | - | SEC | |
| Anthony P. Valduga | CFO AND COO | M - Option exercise | 13.0K | $0.00 | - | SEC | |
| Anthony P. Valduga | CFO AND COO | F - Tax withholding / forfeiture | 3.8K | $25.59 | $98K | SEC | |
| Cameron Bradley Turner | CHIEF CREDIT OFFICER | M - Option exercise | 4.0K | $0.00 | - | SEC | |
| Cameron Bradley Turner | CHIEF CREDIT OFFICER | F - Tax withholding / forfeiture | 1.2K | $25.59 | $30K | SEC | |
| Stephen R. Stone | PRESIDENT AND CEO | F - Tax withholding / forfeiture | 5.0K | $25.59 | $129K | SEC | |
| Lauren M. Hemby | CHIEF ACCOUNTING OFFICER | F - Tax withholding / forfeiture | 1.2K | $25.59 | $30K | SEC | |
| Stephen R. Stone | PRESIDENT AND CEO | M - Option exercise | 17.0K | $0.00 | - | SEC | |
| Lauren M. Hemby | CHIEF ACCOUNTING OFFICER | M - Option exercise | 4.0K | $0.00 | - | SEC | |
| Stephen R. Stone | PRESIDENT AND CEO | P - Open-market purchase | 200 | $24.15 | $5K | SEC | |
| Michael B. High | Insider | P - Open-market purchase | 1.5K | $25.14 | $38K | SEC | |
| Stephen R. Stone | PRESIDENT AND CEO | P - Open-market purchase | 2.2K | $21.50 | $47K | SEC | |
| Patrick M. Frawley | Insider | P - Open-market purchase | 4.7K | $21.50 | $100K | SEC | |
| John G. Aldridge Jr. | Insider | P - Open-market purchase | 5.0K | $21.50 | $108K | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for CoastalSouth Bancshares, Inc. (COSO). Updated in real time as new filings are submitted to the SEC.
Most-Active COSO Insiders - Last 90 Days
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Anthony P. Valduga | 2 | $118K |
Recent COSO Form 8-K Material Events
- - Item 5.03, 9.01 [SEC]
- - Item 2.02, 7.01, 9.01 [SEC]
- - Item 8.01, 9.01 [SEC]
- - Item 5.07 · Other · neutral [SEC]
CoastalSouth Bancshares held its 2026 Annual Meeting of Shareholders on April 23, 2026, with 75.79% quorum. Shareholders voted to elect eleven directors for one-year terms and ratified Elliott Davis, LLC as the independent auditor for fiscal year 2026, with all proposals passing - - Item 2.02, 7.01, 9.01 · Earnings · neutral [SEC]
CoastalSouth Bancshares announced its Q1 2026 financial results for the quarter ended March 31, 2026 via press release and investor presentation on April 20, 2026. The filing provides standard quarterly results disclosure without explicit beat/miss or guidance language.
Recent Insider Filings
- - Anthony P. Valduga (CFO AND COO)
- - Stephen R. Stone (PRESIDENT AND CEO)
- - Lauren M. Hemby (CHIEF ACCOUNTING OFFICER)
- - Anthony P. Valduga (CFO AND COO)
- - Cameron Bradley Turner (CHIEF CREDIT OFFICER)
Form 4 Transaction Code Reference
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in COSO insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
COSO Insider Trading - FAQ
- What is the latest insider trade for COSO?
- CoastalSouth Bancshares, Inc. (COSO) had 1 insider filings in the last 90 days, with the most recent on 2026-05-06. InsiderAlpha tracks every Form 4, Form 144, and 8-K filing in real time.
- How many insiders are buying COSO stock?
- 0 insider purchases of COSO were filed in the last 90 days.
- How many insiders are selling COSO stock?
- 1 insider sale of COSO was filed in the last 90 days, totaling $118K.
- Where can I see COSO SEC filings (Form 4, 10-K, 10-Q, 8-K)?
- This page tracks COSO Form 4 insider transactions, Form 144 sale notices, and 8-K material event disclosures in one timeline. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
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Learn More
- What is SEC Form 4?
- How to read insider buying signals
- Rule 10b5-1 trading plans explained
- The cluster buying signal
Open the live COSO dashboard on InsiderAlpha for real-time alerts, charting, and full historical filing search.