EQNasdaqPharmaceutical PreparationsFiscal year ends December 31
Equillium, Inc.
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Aug 13, 2026
$1.24+0.05 (+4.20%)
Close on Oct 19, 2026
- Market cap
- $138.64M
- P/E (TTM)
- –
- Dividend yield
- –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
65.8%
42M of 63M shares
Institutional holders
60
19 new, 8 sold out
Net institutional buying
8M
In Q2 2026
Insider trades, 12 months
0 buys · 20 sales
Net sold $2.76M
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| ADAR1 Capital Management, LLC | 6,603,754 | 9.90% | 13G (passive) amendment | Mar 31, 2026 |
| Peter Kolchinsky | 6,480,209 | 9.90% | 13G (passive) | Mar 13, 2026 |
| ADAR1 Capital Management GP, LLC | 6,194,882 | 9.90% | 13G (passive) | Sep 30, 2025 |
| Janus Henderson Group PLC | 6,083,239 | 9.99% | 13G (passive) amendment | Jan 30, 2026 |
| Phillip Gross | 6,012,624 | 9.99% | 13G (passive) | Sep 30, 2025 |
| Xiangmin Cui | 5,733,021 | 8.90% | 13G (passive) amendment | Mar 31, 2026 |
| Robert Atchinson | 4,832,767 | 7.25% | 13G (passive) amendment | Jun 30, 2026 |
| Affinity Asset Advisors, LLC | 4,100,000 | 6.50% | 13G (passive) | Jun 30, 2026 |
| Woodline Partners LP | 3,508,771 | 5.90% | 13G (passive) | Sep 30, 2025 |
| abrdn Inc. | 3,352,837 | 5.30% | 13G (passive) | Apr 1, 2026 |
| Takeda Pharmaceutical Company Limited | 1,842,977 | 5.20% | 13G (passive) | Dec 31, 2023 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of EQ | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| Jupiter Topco LLC | 6,494,571 | 10.24% | $20.69M | New | 0.01% |
| Decheng Capital LLC | 4,447,308 | 7.01% | $14.23M | – | 1.94% |
| Affinity Asset Advisors, LLC | 4,100,000 | 6.47% | $13.12M | +2,873,690 | 0.59% |
| ADAR1 Capital Management, LLC | 3,758,569 | 5.93% | $12.03M | +31,910 | 0.55% |
| abrdn plc | 3,631,659 | 5.73% | $11.62M | +278,822 | 0.02% |
| Woodline Partners LP | 3,500,901 | 5.52% | $11.20M | – | 0.03% |
| Ra Capital Management, L.P. | 3,096,336 | 4.88% | $9.91M | – | 0.09% |
| Stempoint Capital LP | 2,016,607 | 3.18% | $6.45M | New | 1.11% |
| Vanguard Capital Management LLC | 1,822,812 | 2.87% | $5.83M | +38,340 | 0.00% |
| Eversept Partners, LP | 1,520,824 | 2.40% | $4.87M | +21,831 | 0.25% |
| Adage Capital Partners Gp, L.L.C. | 1,390,253 | 2.19% | $4.45M | −3,939,163 | 0.01% |
| Renaissance Technologies LLC | 637,617 | 1.01% | $2.04M | −19,347 | 0.00% |
| Exome Asset Management LLC | 552,956 | 0.87% | $1.77M | New | 1.09% |
| DG Capital Management, LLC | 463,396 | 0.73% | $1.48M | New | 0.31% |
| Diadema Partners LP | 400,282 | 0.63% | $1.28M | −33,562 | 0.16% |
| Geode Capital Management, LLC | 381,175 | 0.60% | $1.22M | +2,362 | 0.00% |
| Balyasny Asset Management L.P. | 344,409 | 0.54% | $1.10M | −1,294,361 | 0.00% |
| Tudor Investment Corp Et Al | 320,100 | 0.50% | $1.02M | +300,000 | 0.00% |
| Ikarian Capital, LLC | 303,555 | 0.48% | $971.38K | – | 0.10% |
| BlackRock, Inc. | 285,409 | 0.45% | $913.31K | +157,557 | 0.00% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 60 | 42M | 65.8% | 19 / 17 | 14 / 8 | 14M | 6M |
| Q1 2026 | 50 | 40M | 63.9% | 19 / 9 | 11 / 4 | 10M | 3M |
| Q4 2025 | 36 | 35M | 55.7% | 8 / 15 | 7 / 11 | 10M | 2M |
| Q3 2025 | 40 | 30M | 46.8% | 21 / 7 | 6 / 8 | 22M | 1M |
| Q2 2025 | 27 | 9M | 13.7% | 6 / 6 | 6 / 2 | 0M | 0M |
| Q1 2025 | 24 | 9M | 13.7% | 2 / 6 | 6 / 4 | 0M | 0M |
| Q4 2024 | 26 | 9M | 13.7% | 6 / 3 | 6 / 6 | 0M | 0M |
| Q3 2024 | 26 | 9M | 13.7% | 7 / 3 | 5 / 5 | 0M | 0M |
| Q2 2024 | 25 | 9M | 14.2% | 5 / 6 | 4 / 8 | 0M | 0M |
| Q1 2024 | 28 | 9M | 14.3% | 8 / 6 | 10 / 5 | 1M | 1M |
| Q4 2023 | 25 | 10M | 15.5% | 6 / 4 | 6 / 5 | 6M | 1M |
| Q3 2023 | 25 | 9M | 14.4% | 1 / 6 | 6 / 3 | 0M | 1M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
| Fund | Shares | % of EQ | Value | % of fund | As of |
|---|---|---|---|---|---|
| Vanguard Total Stock Market Index Fund | 1,401,958 | 2.21% | $4.49M | 0.00% | Jun 30, 2026 |
| Vanguard Extended Market Index Fund | 344,489 | 0.54% | $1.10M | 0.00% | Jun 30, 2026 |
| Fidelity Extended Market Index Fund | 164,610 | 0.26% | $477.37K | 0.00% | May 31, 2026 |
| iShares Micro-Cap ETF | 147,697 | 0.23% | $472.63K | 0.03% | Jun 30, 2026 |
| Fidelity Total Market Index Fund | 54,720 | 0.09% | $158.69K | 0.00% | May 31, 2026 |
| Fidelity Series Total Market Index Fund | 47,465 | 0.07% | $137.65K | 0.00% | May 31, 2026 |
| Fidelity Nasdaq Composite Index Fund | 36,683 | 0.06% | $106.38K | 0.00% | May 31, 2026 |
| Tiff Multi-Asset Fund | 31,335 | 0.05% | $100.27K | 0.01% | Jun 30, 2026 |
| Vanguard Balanced Index Fund | 24,987 | 0.04% | $79.96K | 0.00% | Jun 30, 2026 |
| Vanguard Institutional Total Stock Market Index Fund | 22,500 | 0.04% | $72.00K | 0.00% | Jun 30, 2026 |
| Avantis U.S. Small Cap Equity ETF | 10,623 | 0.02% | $30.81K | 0.00% | May 31, 2026 |
| 1290 VT Micro Cap Portfolio | 9,860 | 0.02% | $31.55K | 0.01% | Jun 30, 2026 |
| U.S. Micro Cap Portfolio | 7,668 | 0.01% | $16.87K | 0.00% | Jul 31, 2026 |
| Dimensional U.S. Small Cap ETF | 7,665 | 0.01% | $16.86K | 0.00% | Jul 31, 2026 |
| Victory Extended Market Index Fund | 5,565 | 0.01% | $12.24K | 0.00% | Jul 31, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Daniel Bradbury | CHAIRMAN, Director | 3,711,995 | 5.85% | May 29, 2026 |
| Bruce D. Steel | Chief Executive Officer, Director, 10% owner | 3,711,995 | 5.85% | Jan 9, 2026 |
| Stephen Connelly | President and CSO | 762,025 | 1.20% | Jun 5, 2026 |
| Christine Zedelmayer | Sr. Vice President and COO | 62,586 | 0.10% | Jun 5, 2026 |
| Penny Tom | Principal Accounting Officer | 65,000 | 0.10% | May 29, 2026 |
| Jason A. Keyes | Chief Financial Officer | 126,633 | 0.20% | Feb 19, 2025 |
| Martha J. Demski | Director | 23,799 | 0.04% | May 29, 2026 |
| Mark Pruzanski | Director | 23,799 | 0.04% | May 29, 2026 |
| Charles Douglas McDermott | Director | 23,799 | 0.04% | May 29, 2026 |
| Barbara Troupin | Director | – | – | May 29, 2026 |
| Bala S. Manian | Director | 23,799 | 0.04% | May 23, 2025 |
| Peter Colabuono | Director | – | – | May 23, 2025 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Christine Zedelmayer Sr. Vice President and COO | Jun 5, 2026 | Sale(10b5-1 plan) | −14,584 | $2.93 | $42.73K | 62,586 |
| Christine Zedelmayer Sr. Vice President and COO | Jun 5, 2026 | Option exercise | +14,584 | $0.79 | $11.52K | 77,170 |
| Stephen Connelly President and CSO | Jun 5, 2026 | Sale | −30,975 | $2.94 | $91.07K | 762,025 |
| Stephen Connelly President and CSO | Jun 4, 2026 | Sale | −200,000 | $3.16 | $632.00K | 793,000 |
| Christine Zedelmayer Sr. Vice President and COO | May 28, 2026 | Option exercise | +48,512 | $0.77 | $37.35K | 118,390 |
| Christine Zedelmayer Sr. Vice President and COO | May 28, 2026 | Sale(10b5-1 plan) | −30,208 | $2.98 | $90.02K | 62,586 |
| Christine Zedelmayer Sr. Vice President and COO | May 28, 2026 | Sale(10b5-1 plan) | −55,604 | $2.70 | $150.13K | 62,786 |
| Christine Zedelmayer Sr. Vice President and COO | May 28, 2026 | Option exercise | +7,292 | $0.73 | $5.32K | 69,878 |
| Christine Zedelmayer Sr. Vice President and COO | May 28, 2026 | Sale(10b5-1 plan) | −200 | $2.71 | $542 | 62,586 |
| Christine Zedelmayer Sr. Vice President and COO | May 28, 2026 | Option exercise | +14,583 | $0.79 | $11.52K | 77,169 |
| Christine Zedelmayer Sr. Vice President and COO | May 28, 2026 | Option exercise | +15,625 | $0.79 | $12.34K | 92,794 |
| Penny Tom Principal Accounting Officer | May 28, 2026 | Option exercise | +65,000 | $0.79 | $51.35K | 65,000 |
| Penny Tom Principal Accounting Officer | May 28, 2026 | Sale(10b5-1 plan) | −65,000 | $2.95 | $191.75K | 0 |
| Christine Zedelmayer Sr. Vice President and COO | May 27, 2026 | Sale(10b5-1 plan) | −9,821 | $2.70 | $26.52K | 62,586 |
| Christine Zedelmayer Sr. Vice President and COO | May 27, 2026 | Option exercise | +9,821 | $0.77 | $7.56K | 72,407 |
| Christine Zedelmayer Sr. Vice President and COO | Mar 13, 2026 | Option exercise | +120,312 | $0.79 | $95.05K | 182,898 |
| Christine Zedelmayer Sr. Vice President and COO | Mar 13, 2026 | Sale(10b5-1 plan) | −120,312 | $2.50 | $300.78K | 62,586 |
| Christine Zedelmayer Sr. Vice President and COO | Mar 9, 2026 | Option exercise | +75,000 | $0.79 | $59.25K | 243,805 |
| Christine Zedelmayer Sr. Vice President and COO | Mar 9, 2026 | Option exercise | +41,666 | $0.79 | $32.92K | 168,805 |
| Christine Zedelmayer Sr. Vice President and COO | Mar 9, 2026 | Option exercise | +35,695 | $0.79 | $28.20K | 127,139 |
| Christine Zedelmayer Sr. Vice President and COO | Mar 9, 2026 | Sale(10b5-1 plan) | −181,219 | $2.00 | $362.44K | 62,586 |
| Christine Zedelmayer Sr. Vice President and COO | Feb 19, 2026 | Sale(10b5-1 plan) | −109,375 | $1.78 | $194.69K | 91,444 |
| Christine Zedelmayer Sr. Vice President and COO | Feb 19, 2026 | Option exercise | +76,562 | $0.73 | $55.89K | 168,006 |
| Christine Zedelmayer Sr. Vice President and COO | Feb 19, 2026 | Sale(10b5-1 plan) | −76,562 | $1.74 | $133.22K | 91,444 |
| Christine Zedelmayer Sr. Vice President and COO | Feb 19, 2026 | Option exercise | +109,375 | $0.79 | $86.41K | 200,819 |
| Christine Zedelmayer Sr. Vice President and COO | Feb 19, 2026 | Option exercise | +76,562 | $0.73 | $55.89K | 268,006 |
| Christine Zedelmayer Sr. Vice President and COO | Feb 19, 2026 | Sale(10b5-1 plan) | −109,375 | $1.78 | $194.69K | 191,444 |
| Christine Zedelmayer Sr. Vice President and COO | Feb 19, 2026 | Sale(10b5-1 plan) | −76,562 | $1.74 | $133.22K | 191,444 |
| Christine Zedelmayer Sr. Vice President and COO | Feb 19, 2026 | Option exercise | +109,375 | $0.79 | $86.41K | 300,819 |
| Penny Tom Principal Accounting Officer | Jan 8, 2026 | Sale(10b5-1 plan) | −6,533 | $1.29 | $8.43K | 0 |
| Christine Zedelmayer Sr. Vice President and COO | Dec 23, 2025 | Sale(10b5-1 plan) | −100,000 | $1.50 | $150.00K | 91,444 |
| Christine Zedelmayer Sr. Vice President and COO | Dec 23, 2025 | Option exercise | +100,000 | $0.79 | $79.00K | 191,444 |
| Christine Zedelmayer Sr. Vice President and COO | Dec 15, 2025 | Sale(10b5-1 plan) | −11,900 | $1.31 | $15.59K | 91,444 |
| Christine Zedelmayer Sr. Vice President and COO | Dec 12, 2025 | Sale(10b5-1 plan) | −23,804 | $1.34 | $31.90K | 103,344 |
| Christine Zedelmayer Sr. Vice President and COO | Nov 25, 2025 | Sale(10b5-1 plan) | −100 | $0.98 | $98 | 135,146 |
| Christine Zedelmayer Sr. Vice President and COO | Nov 25, 2025 | Sale(10b5-1 plan) | −7,998 | $0.95 | $7.60K | 127,148 |
| Jason A. Keyes Chief Financial Officer | Jan 23, 2025 | Sale(10b5-1 plan) | −10,000 | $0.65 | $6.50K | 37,720 |
| Jason A. Keyes Chief Financial Officer | Dec 10, 2024 | Award | +15,000 | $0.54 | $8.10K | 88,913 |
| Jason A. Keyes Chief Financial Officer | Nov 14, 2024 | Sale(10b5-1 plan) | −10,000 | $0.70 | $7.00K | 47,720 |
| Christine Zedelmayer Sr. Vice President and COO | Oct 28, 2024 | Sale(10b5-1 plan) | −15,000 | $1.25 | $18.75K | 135,246 |
| Penny Tom Principal Accounting Officer | Oct 28, 2024 | Sale(10b5-1 plan) | −2,835 | $1.25 | $3.54K | 6,533 |
| Penny Tom Principal Accounting Officer | Oct 25, 2024 | Sale(10b5-1 plan) | −683 | $1.25 | $854 | 9,368 |
| Jason A. Keyes Chief Financial Officer | Sep 26, 2024 | Sale(10b5-1 plan) | −10,000 | $0.81 | $8.10K | 57,720 |
| Penny Tom Principal Accounting Officer | Sep 16, 2024 | Sale(10b5-1 plan) | −38,806 | $0.85 | $32.99K | 10,051 |
| Jason A. Keyes Chief Financial Officer | Jul 16, 2024 | Sale(10b5-1 plan) | −10,000 | $0.87 | $8.70K | 67,720 |
| Joel Rothman Chief Development Officer | Dec 8, 2023 | Award | +8,804 | $0.58 | $5.11K | 58,150 |
| Jason A. Keyes Chief Financial Officer | Dec 8, 2023 | Award | +8,805 | $0.58 | $5.11K | 58,913 |
| Christine Zedelmayer Sr. Vice President and COO | Dec 8, 2023 | Award | +8,804 | $0.58 | $5.11K | 135,246 |
| Joel Rothman Chief Development Officer | Jun 9, 2023 | Award | +15,000 | $0.56 | $8.40K | 49,346 |
| Jason A. Keyes Chief Financial Officer | Jun 9, 2023 | Award | +15,000 | $0.56 | $8.40K | 50,108 |
| Christine Zedelmayer Sr. Vice President and COO | Jun 9, 2023 | Award | +15,000 | $0.56 | $8.40K | 126,442 |
| Jason A. Keyes Chief Financial Officer | Dec 9, 2022 | Award | +4,444 | $1.19 | $5.29K | 35,108 |
| Joel Rothman Chief Development Officer | Dec 9, 2022 | Award | +3,821 | $1.19 | $4.55K | 34,346 |
| Jason A. Keyes Chief Financial Officer | Aug 29, 2022 | Sale(10b5-1 plan) | −7,000 | $2.83 | $19.81K | 77,720 |
| Christine Zedelmayer Sr. Vice President and COO | Jun 10, 2022 | Award | +9,033 | $1.85 | $16.71K | 111,442 |
| Joel Rothman Chief Development Officer | Jun 10, 2022 | Award | +6,244 | $1.85 | $11.55K | 30,525 |
| Jason A. Keyes Chief Financial Officer | Jun 6, 2022 | Sale(10b5-1 plan) | −5,000 | $2.52 | $12.60K | 84,720 |
| Jason A. Keyes Chief Financial Officer | Apr 4, 2022 | Sale(10b5-1 plan) | −8,000 | $3.18 | $25.44K | 89,720 |
| Jason A. Keyes Chief Financial Officer | Dec 10, 2021 | Award | +5,585 | $2.35 | $13.12K | 23,296 |
| Joel Rothman Chief Development Officer | Dec 10, 2021 | Award | +1,290 | $2.35 | $3.03K | 24,281 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| Stephen Connelly Officer, President and CSO | Jun 5, 2026 | 30,975 | $91.07K | Jun 5, 2026 | Founders shares acquired at incorporation |
| Stephen Connelly Officer, President and CSO | Jun 4, 2026 | 200,000 | $632.76K | Jun 4, 2026 | Founders shares acquired at incorporation |
| Christine Zedelmayer Officer | May 27, 2026 | 65,625 | $172.59K | May 27, 2026 | Stock Options |
| Christine Zedelmayer Officer | Mar 13, 2026 | 120,312 | $288.75K | Mar 13, 2026 | Stock Options |
| Christine Zedelmayer Officer | Mar 9, 2026 | 181,219 | $320.76K | Mar 9, 2026 | Stock Options |
| Christine Zedelmayer Officer | Feb 19, 2026 | 185,937 | $316.09K | Feb 19, 2026 | Stock Options |
| Penny Tom Officer | Jan 8, 2026 | 6,533 | $8.43K | Jan 8, 2026 | Employee Stock Purchase Plan Shares |
| Christine Zedelmayer Officer | Dec 23, 2025 | 100,000 | $150.00K | Dec 23, 2025 | Stock Options |
| Christine Zedelmayer Officer | Dec 12, 2025 | 23,804 | $31.90K | Dec 12, 2025 | Employee Stock Purchase Plan |
| Christine Zedelmayer Officer | Nov 25, 2025 | 8,098 | $7.43K | Nov 25, 2025 | Restricted Stock |
| Jason A. Keyes Former CFO | Jul 8, 2025 | 88,913 | $28.45K | Jul 7, 2025 | Employee Stock Purchase Plan |
| Keyes Trust U/A Dtd 09/10/2004 The Director | Jun 12, 2025 | 10,000 | $3.86K | Jun 12, 2025 | Previously Exercised Options |
| Keyes Trust U/A Dtd 09/10/2004 The Officer | Nov 14, 2024 | 20,000 | $15.61K | Nov 14, 2024 | Previously Exercised Options |
| Christine Zedelmayer Officer | Oct 31, 2024 | 15,000 | $18.75K | Oct 28, 2024 | Grant |
| Keyes Trust U/A Dtd 09/10/2004 The Officer | Jul 16, 2024 | 20,000 | $17.80K | Jul 16, 2024 | Previously Exercised Options |