This cluster is noise; the dollar amounts are far too small to signal anything about MCRB's prospects. Insiders exercised options and immediately sold a tiny fraction of the resulting shares, likely to cover tax obligations or small personal liquidity needs. There is no trading signal here. Monitor for larger insider moves (>$100K aggregate) before drawing conclusions.
Price Chart
Executive Summary
Four corporate officers and one director sold a total of 474 shares for ~$3,569 in open-market transactions on May 18, 2026, following derivative exercises on May 15 at $0 exercise price. The dollar volume is tiny relative to MCRB's $74M market cap (0.005%), making this a routine, non-material event despite the cluster structure. The exercises and nearly immediate sales suggest tax- or vesting-related liquidity, not informed selling.
Key Financial Metrics
Key Facts
- Five insiders sold 474 total shares at $7.53/share on May 18, 2026 for aggregate proceeds of ~$3,569
- All five insiders had exercised stock options at $0/share three days earlier on May 15, 2026, receiving shares at no cost
- Total sale value of $3,569 represents ~0.005% of MCRB's $74M market cap — far below the 0.1% materiality threshold
- No open-market purchases were made; all sales were at the same price on the same day, consistent with a post-vesting liquidity event
Financial Impact
Total insider sales of ~$3,569, or 0.005% of market cap — economically negligible
Risk Factors
- Insiders continue selling at higher volumes in coming weeks without disclosed 10b5-1 plans
- The derivative exercises could increase share count modestly, though the numbers (max ~2,000 shares) are immaterial
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-MCRB-1779221136001 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 26, 2026 today | 8-K | $1.98 | awaiting T+20 | — | $1.82 (+8.33%) |
Aug 24, 2026 9w ago | EFFECT | $4.66 $4.02 | ▲ +13.73% | ▲ +15.05% | $1.82 (+61.05%) |
Aug 5, 2026 11w ago | 8-K | $5.01 $5.54 | ▲ +10.69% | ▲ +11.29% | $1.82 (−63.74%) |
Jul 8, 2026 15w ago | 8-K | $7.14 $5.01 | ▼ −29.90% | ▼ −33.17% | $1.82 (−74.58%) |
Jun 5, 2026 20w ago | 8-K | $6.63 $7.71 | ▲ +16.29% | ▲ +14.43% | $1.82 (−72.62%) |
Jun 5, 2026 20w ago | Press Release | $6.63 $7.71 | ▲ +16.29% | ▲ +14.43% | $1.82 (−72.62%) |
May 19, 2026 22w ago | Insider Cluster | $7.66 $6.61 | ▼ −13.71% | ▼ −14.45% | $1.82 (−76.31%) |
May 5, 2026 25w ago | 8-K | $7.50 $7.33 | ▲ +2.27% | ▲ +7.22% | $1.82 (+75.80%) |
May 5, 2026 25w ago | Press Release | $7.50 $7.33 | ▲ +2.27% | ▲ +7.22% | $1.82 (+75.80%) |
May 4, 2026 25w ago | Press Release | $7.69 $7.64 | ▼ −0.65% | ▼ −6.30% | $1.82 (−76.40%) |
US Market Status
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