John S. Montalbano
CIK 1834423 · last filed 2026-05-18
John S. Montalbano is a corporate insider who has filed 13 SEC Form 4 insider transactions across 1 company since 2020. The most recent filing shows the insider bought $95.4K of ABCL on May 18, 2026. Across all open-market trades the lifetime net is +$1.5M, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $1.3M across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$1.29M
1
13
$1.48M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| ABCL | Director | 246,000 | $5.24 | $1.29M | $1.48M | 13 | 2026-05-18 |
Recent Filings
13 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-05-18 | ABCL | Buy (P) | +20,000 | $95.4K | EDGAR |
| 2025-11-26 | ABCL | Buy (P) | +50,000 | $178.5K | EDGAR |
| 2025-06-16 | ABCL | Grant (A) | — | $0 | EDGAR |
| 2025-03-10 | ABCL | Buy (P) | +25,000 | $57.5K | EDGAR |
| 2025-03-07 | ABCL | Buy (P) | +60,000 | $140.6K | EDGAR |
| 2024-06-24 | ABCL | Grant (A) | — | $0 | EDGAR |
| 2023-11-08 | ABCL | Buy (P) | +30,000 | $137.4K | EDGAR |
| 2022-12-05 | ABCL | Grant (A) | — | $0 | EDGAR |
| 2022-03-04 | ABCL | Buy (P) | +10,000 | $85.4K | EDGAR |
| 2022-03-03 | ABCL | Buy (P) | +20,000 | $181.0K | EDGAR |