CERS · Insider trading · 13F holders · Congress trades
Cerus Corp (CERS)
Who is buying and selling CERS: 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
- 5
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $90K
- Congress trades, 12 months
- 0
CERS at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 1 CERS insider filed 1 sale worth $90K on SEC Form 4, and no open-market purchases; 1 of the sales were pre-planned under Rule 10b5-1.
- 5 13F filers hold CERS among their 50 largest positions, worth $26.8M combined, including Richard Mashaal. The biggest bets by portfolio weight are Silverarc Capital Management, LLC (1.1%), Topline Capital Management, LLC (0.8%) and Richard Mashaal (0.4%). In their latest 13Fs, 2 managers opened a new position and 2 added to one.
- No member of Congress has disclosed a trade in CERS.
- CERS last closed at $2.44 on Oct 29, 2026.
CERS insider trading
Between Aug 1, 2026 and Oct 29, 2026, 1 CERS insider filed 1 sale worth $90K on SEC Form 4, and no open-market purchases; 1 of the sales were pre-planned under Rule 10b5-1.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Aug 17, 2026 | Jensen Chrystal | Chief Legal Officer | Sale10b5-1 | 30,000 | $2.98 | $90K | SEC |
Who owns CERS? Hedge funds and superinvestors
5 13F filers hold CERS among their 50 largest positions, worth $26.8M combined, including Richard Mashaal. The biggest bets by portfolio weight are Silverarc Capital Management, LLC (1.1%), Topline Capital Management, LLC (0.8%) and Richard Mashaal (0.4%). In their latest 13Fs, 2 managers opened a new position and 2 added to one.
Superinvestors holding CERS: Richard Mashaal 0.4%
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Richard MashaalHedge fund | 0.4% | $13.5M | 4,614,061 | +12.2% shares | Q2 2026 |
| Silverarc Capital Management, LLCHedge fund | 1.1% | $10.1M | 3,472,737 | +9.3% shares | Q2 2026 |
| Topline Capital Management, LLCHedge fund | 0.8% | $3.1M | 1,051,676 | New | Q2 2026 |
| Raub Brock Capital Management LPInstitutional asset manager | 0.0% | $70K | 29,399 | New | Q3 2026 |
| Erste Towarzystwo Funduszy Inwestycyjnych S.a.Investment manager | 0.0% | $57K | 19,493 | — | Q2 2026 |
Each manager counts with its latest 13F (Q3 2026: 1, Q2 2026: 4). Screen CERS in the grand portfolio →
CERS stock trades by members of Congress
No member of Congress has disclosed a trade in CERS.
CERS questions and answers
Are insiders buying CERS stock?
Between Aug 1, 2026 and Oct 29, 2026, 1 CERS insider filed 1 sale worth $90K on SEC Form 4, and no open-market purchases; 1 of the sales were pre-planned under Rule 10b5-1.
Which hedge funds own CERS?
5 13F filers hold CERS among their 50 largest positions, worth $26.8M combined, including Richard Mashaal. The biggest bets by portfolio weight are Silverarc Capital Management, LLC (1.1%), Topline Capital Management, LLC (0.8%) and Richard Mashaal (0.4%). In their latest 13Fs, 2 managers opened a new position and 2 added to one.
Has Congress traded CERS?
No member of Congress has disclosed a trade in CERS.
Who is the largest holder of CERS?
Among 13F filers, Richard Mashaal reports the largest CERS position, $13.5M (4,614,061 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Silverarc Capital Management, LLC's: 1.1% of its portfolio.
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