Holder evidence
50
SEC ownership of AGENUS INC
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001098972.
Lead holder
ZYNEXT VENTURES USA LLC
13D/G signal
ZYNEXT VENTURES USA LLC
Latest evidence
31 Mar 2026
- CIK
- 0001098972
- Symbol
- AGEN on Nasdaq
- Location
- Lexington, MA
- SEC evidence mix
- 13D/G and 13F
- Lead holder
- ZYNEXT VENTURES USA LLC
- Latest large-stake holder
- ZYNEXT VENTURES USA LLC
- Latest evidence date
- 31 Mar 2026
Issuer identity
Ownership snapshot
Ownership snapshot
Top shareholders of AGENUS INC (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Lead holder
ZYNEXT VENTURES USA LLC
13D/G signal
ZYNEXT VENTURES USA LLC
Evidence rows
50
Latest as of
31 Mar 2026
13D/G
13F
Lead comparable stake: 5.9%
13D/G row: ZYNEXT VENTURES USA LLC
Showing 1-8 of 50 holder rows.
Rank 1 holder
ZYNEXT VENTURES USA LLC
13D/G
- Ownership
- 5.9%
- Position
- $6.7M
Rank 2 holder
BlackRock, Inc.
13D/G
13F
- Ownership
- 1.8%
- Position
- $2.3M
Rank 3 holder
VANGUARD CAPITAL MANAGEMENT LLC
13F
- Ownership
- 4%
- Position
- $4.81M
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| ZYNEXT VENTURES USA LLC |
13D/G
|
5.9%
|
$6,698,666
2,133,333 shares
|
$0 | 15 Jan 2026 |
| BlackRock, Inc. |
13D/G
13F
Company
|
1.8%
|
$2,303,670
503,986 shares
|
$0 | 30 Jun 2025 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
Company
|
4%
|
$4,810,375
1,440,232 shares
|
— | 31 Mar 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13F
Company
|
3.3%
|
$3,991,664
1,195,109 shares
|
— | 31 Mar 2026 |
| Siren, L.L.C. |
13F
Individual
|
2.9%
|
$3,554,595
1,064,250 shares
|
— | 31 Mar 2026 |
| MARSHALL WACE, LLP |
13F
Company
|
1.9%
|
$2,298,597
688,203 shares
|
— | 31 Mar 2026 |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
Company
|
0.96%
|
$1,164,522
348,395 shares
|
— | 31 Mar 2026 |
| MORGAN STANLEY |
13F
Company
|
0.82%
|
$988,042
295,821 shares
|
— | 31 Mar 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 31 May 2025.
Buys
$0
Insiders: 0
Sells
$0
Insiders: 0
Net
$0
Shares: 0
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-13 of 13 reporting-owner rows connected to AGENUS INC. Open a relationship link for the CIK-to-CIK filing trail.
Rows
13
Lead holder
Garo H. Armen
Net 12M change
$0
Latest report
15 May 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Garo H. Armen | Chairman, Chief Executive Officer and Principal Financial Officer, Director | $1,270,111 | Median | 15 May 2026 | ||
| Steven J. O'Day | Chief Medical Officer | $255,308 | Mixed | 24 Apr 2026 | ||
| Wadih Jordan | Director | $199,154 | Mixed | 03 Oct 2022 | ||
| Ulf Wiinberg | Director | $193,284 | Mixed | 01 Oct 2024 | ||
| Thomas L. Harrison | Director | $130,253 | Median | 24 Apr 2026 | ||
| Christine M. Klaskin | Pfo & Pao | $104,946 | Mixed | 18 Jun 2025 | ||
| Jennifer Buell | Chairman of the Executive Counsel, Director | $61,385 | Mixed | 24 Apr 2026 | ||
| Timothy Wright | Director | $48,014 | Mixed | 24 Apr 2026 | ||
| Susan B. Hirsch | Director | $44,568 | Mixed | 24 Apr 2026 | ||
| Austin Charette | Principal Accounting Officer | $28,621 | Mixed | 24 Apr 2026 | ||
| Adam Krauss | Chief Legal Officer | Mixed | 15 Jun 2021 | |||
| Brian Corvese | Director | Mixed | 24 Apr 2026 | |||
| Allison Jeynes-Ellis | Director | Mixed | 05 Feb 2024 |
Recent insider transactions for AGENUS INC
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Reported value | Reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Garo H. Armen | AGEN | Common Stock | Award | 1.31% | 4,540 | 351,323 | 15 May 2026 | Direct | ||
| Garo H. Armen | AGEN | Common Stock | Award | 1.24% | 4,233 | 346,783 | 01 May 2026 | Direct | ||
| Susan B. Hirsch | AGEN | Stock Option | Award | 105,000 | 105,000 | 24 Apr 2026 | Direct | |||
| Jennifer Buell | AGEN | Stock Option | Award | 305,000 | 300,000 | 24 Apr 2026 | Direct | |||
| Steven J. O'Day | AGEN | Stock Option | Award | 165,333 | 95,333 | 24 Apr 2026 | Direct | |||
| Thomas L. Harrison | AGEN | Stock Option | Award | 122,500 | 122,500 | 24 Apr 2026 | Direct | |||
| Timothy Wright | AGEN | Stock Option | Award | 105,000 | 105,000 | 24 Apr 2026 | Direct | |||
| Austin Charette | AGEN | Stock Option | Award | 22,619 | 17,619 | 24 Apr 2026 | Direct | |||
| Garo H. Armen | AGEN | Stock Option | Award | 1,165,300 | 1,000,000 | 24 Apr 2026 | Direct | |||
| Brian Corvese | AGEN | Stock Option | Award | 210,000 | 210,000 | 24 Apr 2026 | Direct | |||
| Garo H. Armen | AGEN | Common Stock | Award | 1% | 3,403 | 342,550 | 17 Apr 2026 | Direct | ||
| Garo H. Armen | AGEN | Common Stock | Award | 1.38% | 4,629 | 339,147 | 03 Apr 2026 | Direct | ||
| Thomas L. Harrison | AGEN | Common Stock | Award | 31% | 9,228 | 38,998 | 01 Apr 2026 | Direct | ||
| Timothy R. Wright | AGEN | Deferred Stock Units | Award | 10.2% | 2,448 | 26,361 | 01 Apr 2026 | Direct | ||
| Garo H. Armen | AGEN | Common Stock | Award | 1.21% | 3,983 | 334,518 | 20 Mar 2026 | Direct | ||
| Garo H. Armen | AGEN | Common Stock | Award | 1.53% | 4,994 | 330,535 | 06 Mar 2026 | Direct | ||
| Garo H. Armen | AGEN | Common Stock | Award | 1.51% | 4,829 | 325,541 | 20 Feb 2026 | Direct | ||
| Garo H. Armen | AGEN | Common Stock | Award | 1.59% | 5,027 | 320,712 | 06 Feb 2026 | Direct | ||
| Garo H. Armen | AGEN | Common Stock | Award | 1.47% | 4,562 | 315,685 | 23 Jan 2026 | Direct | ||
| Garo H. Armen | AGEN | Common Stock | Award | 1.23% | 3,780 | 311,123 | 09 Jan 2026 | Direct | ||
| Thomas L. Harrison | AGEN | Common Stock | Award | 34.8% | 7,691 | 29,770 | 02 Jan 2026 | Direct | ||
| Timothy R. Wright | AGEN | Deferred Stock Units | Award | 9.33% | 2,041 | 23,913 | 02 Jan 2026 | Direct | ||
| Garo H. Armen | AGEN | Common Stock | Award | 1.63% | 4,942 | 307,343 | 26 Dec 2025 | Direct | ||
| Garo H. Armen | AGEN | Common Stock | Award | 1.45% | 4,316 | 302,401 | 12 Dec 2025 | Direct | ||
| Garo H. Armen | AGEN | Common Stock | Award | 1.22% | 3,587 | 298,085 | 28 Nov 2025 | Direct | ||
| Garo H. Armen | AGEN | Common Stock | Award | 1.3% | 3,769 | 294,498 | 14 Nov 2025 | Direct | ||
| Garo H. Armen | AGEN | Common Stock | Award | 1.44% | 4,120 | 290,729 | 31 Oct 2025 | Direct | ||
| Garo H. Armen | AGEN | Common Stock | Award | 1.49% | 4,216 | 286,609 | 17 Oct 2025 | Direct | ||
| Garo H. Armen | AGEN | Common Stock | Award | 1.42% | 3,951 | 282,393 | 03 Oct 2025 | Direct | ||
| Thomas L. Harrison | AGEN | Common Stock | Award | 35.5% | 5,780 | 22,079 | 01 Oct 2025 | Direct | ||
| Timothy R. Wright | AGEN | Deferred Stock Units | Award | 8.45% | 1,705 | 21,872 | 01 Oct 2025 | Direct | ||
| Garo H. Armen | AGEN | Common Stock | Award | 1.36% | 3,734 | 278,442 | 19 Sep 2025 | Direct | ||
| Garo H. Armen | AGEN | Common Stock | Award | 1.39% | 3,778 | 274,708 | 05 Sep 2025 | Direct | ||
| Garo H. Armen | AGEN | Common Stock | Award | 1.35% | 3,619 | 270,930 | 22 Aug 2025 | Direct | ||
| Garo H. Armen | AGEN | Common Stock | Award | 1.29% | 3,407 | 267,311 | 08 Aug 2025 | Direct | ||
| Garo H. Armen | AGEN | Common Stock | Award | 1.05% | 2,745 | 263,904 | 25 Jul 2025 | Direct | ||
| Garo H. Armen | AGEN | Common Stock | Award | 0.9% | 2,317 | 261,159 | 11 Jul 2025 | Direct | ||
| Thomas L. Harrison | AGEN | Common Stock | Award | 83.2% | 7,401 | 16,299 | 01 Jul 2025 | Direct | ||
| Timothy R. Wright | AGEN | Deferred Stock Units | Award | 15.5% | 2,708 | 20,168 | 01 Jul 2025 | Direct | ||
| Garo H. Armen | AGEN | Common Stock | Award | 1.35% | 3,436 | 258,842 | 27 Jun 2025 | Direct | ||
| Garo H. Armen | AGEN | Common Stock | Award | 31.6% | 61,397 | 255,406 | 18 Jun 2025 | Direct | ||
| Christine M. Klaskin | AGEN | Common Stock | Award | 205.1% | 15,782 | 23,478 | 18 Jun 2025 | Direct | ||
| Steven J. O'Day | AGEN | Common Stock | Award | 319.4% | 43,497 | 57,116 | 18 Jun 2025 | Direct | ||
| Thomas L. Harrison | AGEN | Stock Option | Award | 140% | 17,500 | 30,000 | 17 Jun 2025 | Direct | ||
| Timothy Wright | AGEN | Stock Option | Award | 15,750 | 15,000 | 17 Jun 2025 | Direct | |||
| Brian Corvese | AGEN | Stock Option | Award | 30,750 | 30,000 | 17 Jun 2025 | Direct | |||
| Susan B. Hirsch | AGEN | Stock Option | Award | 15,000 | 15,000 | 17 Jun 2025 | Direct | |||
| Garo H. Armen | AGEN | Stock Option | Award | 37,500 | 37,500 | 17 Jun 2025 | Direct | |||
| Christine M. Klaskin | AGEN | Stock Option | Award | 7,250 | 7,250 | 17 Jun 2025 | Direct | |||
| Garo H. Armen | AGEN | Common Stock | Award | 1.83% | 3,480 | 194,009 | 13 Jun 2025 | Direct |
* indicates a reported price that failed the local validity check.