COSO · Insider trading · 13F holders · Congress trades
CoastalSouth Bancshares, Inc. (COSO)
Who is buying and selling COSO: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 9
- Insider buys, 90 days
- $9K
- Insider sales, 90 days
- $333K
- Congress trades, 12 months
- 0
COSO at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 2 COSO insiders filed 1 open-market purchase worth $9K and 5 sales worth $333K on SEC Form 4; 1 of the sales were pre-planned under Rule 10b5-1.
- 9 13F filers hold COSO among their 50 largest positions, worth $62.4M combined. The biggest bets by portfolio weight are Patriot Financial Partners GP II, L.P. (4.7%), Fourthstone LLC (4.3%) and EJF Capital LP (3.5%). In their latest 13Fs, 0 managers opened a new position and 1 added to one.
- No member of Congress has disclosed a trade in COSO.
- COSO last closed at $27.98 on Oct 29, 2026.
COSO insider trading
Between Aug 1, 2026 and Oct 29, 2026, 2 COSO insiders filed 1 open-market purchase worth $9K and 5 sales worth $333K on SEC Form 4; 1 of the sales were pre-planned under Rule 10b5-1.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Oct 26, 2026 | Bruderer Ernst W. | Director | Sale | 6,000 | $27.92 | $167K | SEC |
| Sep 14, 2026 | Macleod James S | Director | Buy | 334 | $27.99 | $9K | SEC |
| Aug 31, 2026 | Bruderer Ernst W. | Director | Sale | 2,000 | $27.43 | $55K | SEC |
| Aug 26, 2026 | Bruderer Ernst W. | Director | Sale | 2,000 | $27.50 | $55K | SEC |
| Aug 18, 2026 | Bruderer Ernst W. | Director | Sale | 1,000 | $27.89 | $28K | SEC |
| Aug 13, 2026 | Bruderer Ernst W. | Director | Sale10b5-1 | 1,000 | $27.56 | $28K | SEC |
Who owns COSO? Hedge funds and superinvestors
9 13F filers hold COSO among their 50 largest positions, worth $62.4M combined. The biggest bets by portfolio weight are Patriot Financial Partners GP II, L.P. (4.7%), Fourthstone LLC (4.3%) and EJF Capital LP (3.5%). In their latest 13Fs, 0 managers opened a new position and 1 added to one.
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Patriot Financial Partners GP II, L.P.Wealth manager | 4.7% | $18.6M | 691,367 | -40.4% shares | Q2 2026 |
| North Reef Capital Management LPHedge fund | 0.4% | $10.0M | 370,982 | +15.6% shares | Q2 2026 |
| Berkeley Capital Partners, LLCWealth manager | 2.0% | $9.6M | 356,390 | -1.2% shares | Q2 2026 |
| Mendon Capital Advisors CorpMutual fund manager | 2.5% | $7.2M | 267,232 | -19.0% shares | Q2 2026 |
| Fourthstone LLCHedge fund | 4.3% | $6.1M | 225,211 | -79.5% shares | Q2 2026 |
| EJF Capital LPHedge fund | 3.5% | $5.2M | 192,676 | +0.0% shares | Q2 2026 |
| Raffles Associates LPHedge fund | 2.7% | $3.0M | 112,138 | -7.5% shares | Q2 2026 |
| Elizabeth Park Capital Advisors, Ltd.Hedge fund | 1.4% | $2.0M | 75,740 | +0.0% shares | Q2 2026 |
| Salzhauer MichaelInvestment manager | 0.4% | $866K | 33,046 | +0.0% shares | Q3 2026 |
Each manager counts with its latest 13F (Q3 2026: 1, Q2 2026: 8). Screen COSO in the grand portfolio →
COSO stock trades by members of Congress
No member of Congress has disclosed a trade in COSO.
COSO questions and answers
Are insiders buying COSO stock?
Between Aug 1, 2026 and Oct 29, 2026, 2 COSO insiders filed 1 open-market purchase worth $9K and 5 sales worth $333K on SEC Form 4; 1 of the sales were pre-planned under Rule 10b5-1.
Which hedge funds own COSO?
9 13F filers hold COSO among their 50 largest positions, worth $62.4M combined. The biggest bets by portfolio weight are Patriot Financial Partners GP II, L.P. (4.7%), Fourthstone LLC (4.3%) and EJF Capital LP (3.5%). In their latest 13Fs, 0 managers opened a new position and 1 added to one.
Has Congress traded COSO?
No member of Congress has disclosed a trade in COSO.
Who is the largest holder of COSO?
Among 13F filers, Patriot Financial Partners GP II, L.P. reports the largest COSO position, $18.6M (691,367 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Patriot Financial Partners GP II, L.P.'s: 4.7% of its portfolio.
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