COYA THERAPEUTICS INC COYA
COMMON STOCK · Common Stock · CUSIP 22407B108
- SectorHealth care
- IndustryPharmaceutical Preparations
- HeadquartersHouston, TX
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Shares outstanding: 23.5m as of 2026-08-07, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $5.85. Options: 2 managers hold calls ($391.4k notional), 0 hold puts (—).
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q4 2022 | 5 |
| Q1 2023 | 8 |
| Q2 2023 | 15 |
| Q3 2023 | 16 |
| Q4 2023 | 22 |
| Q1 2024 | 20 |
| Q2 2024 | 20 |
| Q3 2024 | 20 |
| Q4 2024 | 27 |
| Q1 2025 | 27 |
| Q2 2025 | 34 |
| Q3 2025 | 36 |
| Q4 2025 | 58 |
| Q1 2026 | 57 |
| Q2 2026 | 54 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 5 | 8 |
| Q4 2024 | 18 | 6 |
| Q1 2025 | 14 | 9 |
| Q2 2025 | 18 | 7 |
| Q3 2025 | 18 | 11 |
| Q4 2025 | 48 | 11 |
| Q1 2026 | 29 | 23 |
| Q2 2026 | 19 | 24 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $0 | $0 | — |
| Q4 2025 | $55.7k | $0 | 0.00 |
| Q1 2026 | $291.6k | $0 | 0.00 |
| Q2 2026 | $391.4k | $0 | 0.00 |
Biggest buyers
| RENAISSANCE TECHNOLOGIES LLC | Added | +89.0k |
| ROYAL BANK OF CANADA | Added | +80.0k |
| JONES FINANCIAL COMPANIES LLLP | Added | +66.0k |
| DIMENSIONAL FUND ADVISORS LP | Added | +60.0k |
| Quadrature Capital Ltd | New | +30.8k |
| GOLDMAN SACHS GROUP INC | New | +26.2k |
| CM Management, LLC | Added | +25.0k |
| MARSHALL WACE, LLP | Added | +24.0k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | +21.7k |
| AXQ CAPITAL, LP | New | +19.8k |
Biggest sellers
| AIGH Capital Management LLC | Reduced | -343.5k |
| Prosight Management, LP | Reduced | -250.4k |
| 683 Capital Management, LLC | Sold out | -70.0k |
| Point72 Asset Management, L.P. | Sold out | -37.7k |
| WESTWOOD HOLDINGS GROUP INC | Sold out | -36.0k |
| CIBC Bancorp USA Inc. | Sold out | -25.0k |
| HRT FINANCIAL LP | Sold out | -13.5k |
| JANE STREET GROUP, LLC | Sold out | -13.3k |
| VANGUARD FIDUCIARY TRUST CO | Reduced | -10.3k |
| Squarepoint Ops LLC | Reduced | -7.2k |
Biggest calls
| JANE STREET GROUP, LLC | Reduced | $344.6k58.9k shares |
| SIMPLEX TRADING, LLC | Reduced | $46.8k8.0k shares |
Biggest puts
| None |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| DME Capital Management, LP 13G · institution filed 2025-02-14 | 9.9% |
| Dr. Reddy's Laboratories, Inc. 13G · passive investor new · filed 2026-03-12 | 9.7% |
Fell to 5% or below in the last year: HIRSCHMAN ORIN (3.3%, 2026-07-27), VANGUARD GROUP INC (4.3%, 2026-01-30)
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 3 | $106.4k | 0 | — | — |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 0 | — | 0 | — | — |
| Q3 2025 | 0 | — | 0 | — | — |
| Q4 2025 | 0 | — | 0 | — | — |
| Q1 2026 | 0 | — | 0 | — | — |
| Q2 2026 | 0 | — | 0 | — | — |
| Q3 2026 | 0 | — | 0 | — | — |
None reported since 1 Apr 2026.
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| DME Capital Management, LP 0.35% of their portfolio | 2.3m $13.7m | Unchanged |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 842.2k $4.9m | Reduced -2.7k |
| Alyeska Investment Group, L.P. 0.01% of their portfolio | 800.0k $4.7m | Unchanged |
| AIGH Capital Management LLC 0.33% of their portfolio | 631.9k $3.7m | Reduced -343.5k |
| CM Management, LLC 1.49% of their portfolio | 400.0k $2.3m | Added +25.0k |
| PRIVATE MANAGEMENT GROUP INC 0.06% of their portfolio | 384.2k $2.2m | Added +15.1k |
| MARSHALL WACE, LLP 0.00% of their portfolio | 249.8k $1.5m | Added +24.0k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 228.2k $1.3m | Reduced -5.2k |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 193.0k $1.1m | Added +89.0k |
| Prosight Management, LP 0.17% of their portfolio | 170.0k $994.5k | Reduced -250.4k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 155.9k $913.0k | Added +60.0k |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 129.6k $757.9k | Reduced -10.3k |
| JONES FINANCIAL COMPANIES LLLP 0.00% of their portfolio | 110.9k $610.0k | Added +66.0k |
| BlackRock, Inc. 0.00% of their portfolio | 102.4k $599.1k | Added +19.6k |
| PRELUDE CAPITAL MANAGEMENT, LLC 0.04% of their portfolio | 101.3k $592.8k | Unchanged |
| JBF Capital, Inc. 0.08% of their portfolio | 100.0k $585.0k | Unchanged |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 93.4k $546.0k | Added +80.0k |
| MORGAN STANLEY 0.00% of their portfolio | 82.1k $480.3k | Reduced -3.6k |
| STATE STREET CORP 0.00% of their portfolio | 79.8k $466.9k | Unchanged |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 61.0k $356.9k | Added +21.7k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 45.1k $263.7k | Added +4.7k |
| XTX Topco Ltd 0.00% of their portfolio | 41.4k $242.2k | Reduced -5.9k |
| ADAR1 Capital Management, LLC 0.01% of their portfolio | 40.9k $239.3k | Unchanged |
| Long Corridor Asset Management Ltd 0.07% of their portfolio | 38.8k $226.8k | Unchanged |
| Cetera Investment Advisers 0.00% of their portfolio | 34.0k $198.9k | Added +4.0k |
| Squarepoint Ops LLC 0.00% of their portfolio | 33.3k $194.6k | Reduced -7.2k |
| UBS Group AG 0.00% of their portfolio | 33.1k $193.6k | Reduced -5.5k |
| Quadrature Capital Ltd 0.00% of their portfolio | 30.8k $180.1k | New |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 26.2k $153.2k | New |
| GHP Investment Advisors, Inc. 0.01% of their portfolio | 26.2k $153.1k | Unchanged |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO 0.00% of their portfolio | 20.6k $120.7k | Unchanged |
| AXQ CAPITAL, LP 0.01% of their portfolio | 19.8k $115.9k | New |
| OPPENHEIMER & CO INC 0.00% of their portfolio | 18.0k $105.3k | Unchanged |
| Jump Financial, LLC 0.00% of their portfolio | 17.3k $101.2k | Reduced -3.7k |
| OCCUDO QUANTITATIVE STRATEGIES LP 0.01% of their portfolio | 16.8k $98.4k | Reduced -6.8k |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 13.1k $76.7k | Reduced -3.8k |
| Allworth Financial LP 0.00% of their portfolio | 13.0k $76.0k | Added +12.0k |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 10.2k $59.8k | Reduced -1.4k |
| HighTower Advisors, LLC 0.00% of their portfolio | 10.0k $58.7k | Unchanged |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 10.0k $58.5k | Unchanged |
| Vanguard Global Advisers, LLC 0.00% of their portfolio | 5.9k $34.4k | Unchanged |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 5.2k $31.4k | Added +181 |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 4.8k $27.9k | Reduced -3.8k |
| BFSG, LLC 0.00% of their portfolio | 3.5k $20.2k | Unchanged |
| IFP Advisors, Inc 0.00% of their portfolio | 2.0k $11.7k | Reduced -500 |
| Rockefeller Capital Management L.P. 0.00% of their portfolio | 2.0k $11.7k | Unchanged |
| SBI Securities Co., Ltd. 0.00% of their portfolio | 820 $4.8k | Reduced -101 |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 500 $2.9k | Unchanged |
| Steward Partners Investment Advisory, LLC 0.00% of their portfolio | 500 $2.9k | Unchanged |
| North Star Investment Management Corp. 0.00% of their portfolio | 340 $2.0k | Unchanged |
| BARCLAYS PLC 0.00% of their portfolio | 113 $661 | New |
| Arax Advisory Partners 0.00% of their portfolio | 60 $351 | New |
| Triumph Capital Management 0.00% of their portfolio | 50 $292 | Unchanged |
| Caitong International Asset Management Co., Ltd 0.00% of their portfolio | 41 $240 | Added +38 |