Quick Takeaways
- EQ - Equillium, Inc. has 14 insiders with reported activity on this page.
- Net insider value flow over the last year: -$1,204,969.
- Recent transaction rows are available for direct filing-level review.
- Info
- Insider Trading
- Financials
- Holders
Insider Transactions Reported by 14 Insiders of Equillium, Inc.
- Symbol
- EQ on Nasdaq
- Location
- La Jolla, CA
What Changed
- Buy value: ; sell value: $1,204,968.
- Net share flow: -637,803.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Official SEC Source
Insider trading overview
Last 12 monthsNet insider flow leans to selling over the last 12 months. Net value: -$1,204,969.
Buys
$0
Shares: 0
Insiders: 0
Sells
$1,204,969
Shares: 637,803
Insiders: 2
Net
-$1,204,969
Shares: -637,803
Insiders: -2
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 487,468 | $0 | $991,359 | -$991,359 |
| 3-6 | 0 | 150,335 | $0 | $213,610 | -$213,610 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Equillium, Inc. executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Christine Zedelmayer | Sr. Vice President and COO | $156,483 | -$1,196,541 | -88% | Filing P/S | 13 Mar 2026 |
| Jason A. Keyes | Chief Financial Officer | $82,311 | Mixed | 14 Feb 2025 | ||
| Joel Rothman | Chief Development Officer | $33,727 | Mixed | 02 Jan 2024 | ||
| Penny Tom | Principal Accounting Officer | $0 | -$8,428 | -100% | Mixed | 07 Jan 2026 |
| Martha J. Demski | Director | Mixed | 21 May 2025 | |||
| Bala S. Manian | Director | Mixed | 21 May 2025 | |||
| Bruce D. Steel | Chief Executive Officer, Director, 10%+ Owner | Mixed | 07 Jan 2026 | |||
| Charles Douglas McDermott | Director | Mixed | 21 May 2025 | |||
| Daniel Bradbury | EXECUTIVE CHAIRMAN, Director, 10%+ Owner | Mixed | 14 Feb 2025 | |||
| Mark Pruzanski | Director | Mixed | 21 May 2025 | |||
| Barbara Troupin | Director | Mixed | 21 May 2025 | |||
| Stephen Connelly | President and CSO, Director | Mixed | 07 Jan 2026 | |||
| Peter Colabuono | Director | Mixed | 21 May 2025 | |||
| Ph.D. Yu Xu | Director | Mixed | 22 May 2024 |
Top shareholders of Equillium, Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| RA CAPITAL MANAGEMENT, L.P. |
13D/G
|
— |
9.9%
|
6,480,209
|
$11,275,564 | $0 | 13 Mar 2026 | |
| JANUS HENDERSON GROUP PLC |
13D/G
13F
|
Company |
10%
|
6,083,239
|
$9,429,020 | $0 | 30 Jan 2026 | |
| ADAR1 Capital Management, LLC |
13D/G
13F
|
ADAR1 Capital Management GP, LLC · Company |
9.9%
|
6,194,882
|
$8,857,442 | $0 | 30 Sep 2025 | |
| Adage Capital Management, L.P. |
13D/G
|
— |
10%
|
6,012,624
|
$8,596,850 | $0 | 30 Sep 2025 | |
| ADAGE CAPITAL PARTNERS GP, L.L.C. |
13F
|
Company |
8.1%
|
5,329,416
|
$8,260,595 | — | 31 Dec 2025 | |
| Decheng Capital LLC |
13F
|
Company |
6.8%
|
4,447,308
|
$6,893,328 | — | 31 Dec 2025 | |
| Woodline Partners LP |
13F
13D/G
|
Company |
5.9%
from 13D/G
|
3,500,901
|
$5,426,397 | — | 31 Dec 2025 | |
| Aberdeen Group plc |
13F
|
Company |
3.6%
|
2,366,688
|
$3,668,366 | — | 31 Dec 2025 | |
| BALYASNY ASSET MANAGEMENT L.P. |
13F
|
Company |
3.2%
|
2,076,250
|
$3,218,188 | — | 31 Dec 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
2.9%
|
1,920,423
|
$2,976,656 | — | 31 Dec 2025 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
1.1%
|
733,226
|
$1,136,500 | — | 31 Dec 2025 | |
| CANTOR FITZGERALD, L. P. |
13F
|
Individual |
0.86%
|
562,643
|
$872,097 | — | 31 Dec 2025 | |
| Hudson Bay Capital Management LP |
13F
|
Company |
0.65%
|
428,538
|
$664,234 | — | 31 Dec 2025 | |
| DIADEMA PARTNERS LP |
13F
|
Company |
0.53%
|
347,393
|
$538,459 | — | 31 Dec 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
0.53%
|
345,310
|
$535,289 | — | 31 Dec 2025 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
0.5%
|
324,610
|
$503,146 | — | 31 Dec 2025 | |
| Ikarian Capital, LLC |
13F
|
Company |
0.46%
|
303,555
|
$470,510 | — | 31 Dec 2025 | |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP |
13F
|
Company |
0.28%
|
185,669
|
$287,787 | — | 31 Dec 2025 | |
| STATE STREET CORP |
13F
|
Company |
0.24%
|
155,420
|
$240,901 | — | 31 Dec 2025 | |
| BlackRock, Inc. |
13F
|
Company |
0.19%
|
126,053
|
$195,382 | — | 31 Dec 2025 | |
| Christine Zedelmayer |
3/4/5
|
Sr. Vice President and COO |
—
mixed-class rows
|
117,274
mixed-class rows
|
$156,483 | -$1,196,541 | 13 Mar 2026 | |
| JANE STREET GROUP, LLC |
13F
|
Company |
0.15%
|
100,850
|
$156,317 | — | 31 Dec 2025 | |
| BOOTHBAY FUND MANAGEMENT, LLC |
13F
|
Company |
0.14%
|
93,211
|
$144,477 | — | 31 Dec 2025 | |
| Persistent Asset Partners Ltd |
13F
|
Company |
0.14%
|
93,123
|
$144,341 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.14%
|
88,529
|
$137,220 | — | 31 Dec 2025 | |
| ROYAL BANK OF CANADA |
13F
|
Company |
0.12%
|
79,734
|
$124,000 | — | 31 Dec 2025 | |
| Jason A. Keyes |
3/4/5
|
Chief Financial Officer |
—
class O/S missing
|
126,633
|
$82,311 | — | 14 Feb 2025 | |
| AlphaCore Capital LLC |
13F
|
Company |
0.08%
|
52,345
|
$81,135 | — | 31 Dec 2025 | |
| TWO SIGMA ADVISERS, LP |
13F
|
Company |
0.07%
|
44,100
|
$68,355 | — | 31 Dec 2025 | |
| MORGAN STANLEY |
13F
|
Company |
0.05%
|
35,734
|
$55,388 | — | 31 Dec 2025 | |
| Schonfeld Strategic Advisors LLC |
13F
|
Company |
0.04%
|
25,381
|
$39,339 | — | 31 Dec 2025 | |
| Joel Rothman |
3/4/5
|
Chief Development Officer |
—
mixed-class rows
|
233,150
mixed-class rows
|
$33,727 | — | 02 Jan 2024 | |
| TUDOR INVESTMENT CORP ET AL |
13F
|
Company |
0.03%
|
20,100
|
$31,155 | — | 31 Dec 2025 | |
| Apollon Wealth Management, LLC |
13F
|
Company |
0.02%
|
13,875
|
$21,506 | — | 31 Dec 2025 | |
| Coastal Bridge Advisors, LLC |
13F
|
Company |
0.02%
|
10,500
|
$16,275 | — | 31 Dec 2025 | |
| Tower Research Capital LLC (TRC) |
13F
|
Company |
0.01%
|
4,070
|
$6,309 | — | 31 Dec 2025 | |
| WELLS FARGO & COMPANY/MN |
13F
|
Company |
0%
|
1,000
|
$1,550 | — | 31 Dec 2025 | |
| UBS Group AG |
13F
|
Company |
0%
|
920
|
$1,426 | — | 31 Dec 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0%
|
295
|
$457 | — | 31 Dec 2025 | |
| SBI Securities Co., Ltd. |
13F
|
Company |
0%
|
283
|
$439 | — | 31 Dec 2025 | |
| JONES FINANCIAL COMPANIES LLLP |
13F
|
Company |
0%
|
250
|
$388 | — | 31 Dec 2025 | |
| Bruce D. Steel |
3/4/5
|
Chief Executive Officer, Director, 10%+ Owner |
—
class O/S missing
|
1,750,000
|
— | — | 07 Jan 2026 | |
| Stephen Connelly |
3/4/5
|
President and CSO, Director |
—
class O/S missing
|
1,150,000
|
— | — | 07 Jan 2026 | |
| Penny Tom |
3/4/5
|
Principal Accounting Officer |
—
class O/S missing
|
450,000
|
— | -$8,428 | 07 Jan 2026 | |
| Bala S. Manian |
3/4/5
|
Director |
—
mixed-class rows
|
40,000
mixed-class rows
|
— | — | 21 May 2025 | |
| Barbara Troupin |
3/4/5
|
Director |
—
mixed-class rows
|
40,000
mixed-class rows
|
— | — | 21 May 2025 | |
| Charles Douglas McDermott |
3/4/5
|
Director |
—
mixed-class rows
|
40,000
mixed-class rows
|
— | — | 21 May 2025 | |
| Mark Pruzanski |
3/4/5
|
Director |
—
mixed-class rows
|
40,000
mixed-class rows
|
— | — | 21 May 2025 | |
| Martha J. Demski |
3/4/5
|
Director |
—
mixed-class rows
|
40,000
mixed-class rows
|
— | — | 21 May 2025 | |
| Peter Colabuono |
3/4/5
|
Director |
—
class O/S missing
|
20,000
|
— | — | 21 May 2025 |
Recent Insider Transactions by Companies or Individuals for Equillium, Inc.
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Christine Zedelmayer | EQ | Common Stock | Sale | -65.8% | $300,816 | $2.50 | -120,312 | 62,586 | 13 Mar 2026 | Direct |
| Christine Zedelmayer | EQ | Common Stock | Options Exercise | 192.2% | 120,312 | 182,898 | 13 Mar 2026 | Direct | ||
| Christine Zedelmayer | EQ | Employee Stock Option (right to buy) | Options Exercise | -68.8% | -120,312 | 54,688 | 13 Mar 2026 | Direct | ||
| Christine Zedelmayer | EQ | Common Stock | Sale | -74.3% | $362,438 | $2.00 | -181,219 | 62,586 | 09 Mar 2026 | Direct |
| Christine Zedelmayer | EQ | Common Stock | Options Exercise | 166.6% | 152,361 | 243,805 | 09 Mar 2026 | Direct | ||
| Christine Zedelmayer | EQ | Employee Stock Option (right to buy) | Options Exercise | -100% | -152,361 | 0 | 09 Mar 2026 | Direct | ||
| Christine Zedelmayer | EQ | Common Stock | Sale | -67% | $328,104 | $1.76 | -185,937 | 91,444 | 19 Feb 2026 | Direct |
| Christine Zedelmayer | EQ | Common Stock | Options Exercise | 1249.4% | 185,937 | 200,819 | 19 Feb 2026 | Direct | ||
| Penny Tom | EQ | Common Stock | Sale | -100% | $8,428 | $1.29 | -6,533 | 0 | 08 Jan 2026 | Direct |
| Stephen Connelly | EQ | Employee Stock Option (right to buy) | Award | 1,150,000 | 1,150,000 | 07 Jan 2026 | Direct | |||
| Christine Zedelmayer | EQ | Employee Stock Option (right to buy) | Award | 500,000 | 500,000 | 07 Jan 2026 | Direct | |||
| Bruce D. Steel | EQ | Employee Stock Option (right to buy) | Award | 1,750,000 | 1,750,000 | 07 Jan 2026 | Direct | |||
| Penny Tom | EQ | Employee Stock Option (right to buy) | Award | 450,000 | 450,000 | 07 Jan 2026 | Direct | |||
| Christine Zedelmayer | EQ | Common Stock | Sale | -52.2% | $150,000 | $1.50 | -100,000 | 91,444 | 23 Dec 2025 | Direct |
| Christine Zedelmayer | EQ | Common Stock | Options Exercise | 109.4% | 100,000 | 191,444 | 23 Dec 2025 | Direct | ||
| Christine Zedelmayer | EQ | Employee Stock Option (right to buy) | Options Exercise | -100% | -100,000 | 0 | 23 Dec 2025 | Direct | ||
| Christine Zedelmayer | EQ | Common Stock | Sale | -11.5% | $15,589 | $1.31 | -11,900 | 91,444 | 15 Dec 2025 | Direct |
| Christine Zedelmayer | EQ | Common Stock | Sale | -18.7% | $31,897 | $1.34 | -23,804 | 103,344 | 12 Dec 2025 | Direct |
| Christine Zedelmayer | EQ | Common Stock | Sale | -5.99% | $7,696 | $0.9504 | -8,098 | 127,148 | 25 Nov 2025 | Direct |
| Stephen Connelly | EQ | Employee Stock Option (right to buy) | Award | 1,025,000 | 1,025,000 | 29 Aug 2025 | Direct | |||
| Penny Tom | EQ | Employee Stock Option (right to buy) | Award | 525,000 | 525,000 | 29 Aug 2025 | Direct | |||
| Christine Zedelmayer | EQ | Employee Stock Option (right to buy) | Award | 725,000 | 725,000 | 29 Aug 2025 | Direct | |||
| Bruce D. Steel | EQ | Employee Stock Option (right to buy) | Award | 1,695,000 | 1,695,000 | 29 Aug 2025 | Direct | |||
| Peter Colabuono | EQ | Director Stock Option (right to buy) | Award | 20,000 | 20,000 | 21 May 2025 | Direct | |||
| Martha J. Demski | EQ | Director Stock Option (right to buy) | Award | 20,000 | 20,000 | 21 May 2025 | Direct | |||
| Mark Pruzanski | EQ | Director Stock Option (right to buy) | Award | 20,000 | 20,000 | 21 May 2025 | Direct | |||
| Charles Douglas McDermott | EQ | Director Stock Option (right to buy) | Award | 20,000 | 20,000 | 21 May 2025 | Direct | |||
| Barbara Troupin | EQ | Director Stock Option (right to buy) | Award | 20,000 | 20,000 | 21 May 2025 | Direct | |||
| Bala S. Manian | EQ | Director Stock Option (right to buy) | Award | 20,000 | 20,000 | 21 May 2025 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.