Montalbano John S.
Director · ABCL
As of 2026-09-27, Montalbano John S. has 8 Form 4 transactions on record across 1 company — 4 in the trailing 12 months.
Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.
Reconstructed holdings
- Direct $3.2M
- Indirect $0
| ABCL | direct | 251,000 sh | $3.2M |
Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.
Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.
Trades by company
Filing ledger
| Date | Company | Action | Shares @ price | Value | Ownership Δ | Owned after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-08-18 | ABCL | Purchase | 10,000 @ $11.03 | $110K | +4.1% of holding | 251,000 | Form 4 |
| 2026-05-14 | ABCL | Purchase | 20,000 @ $4.77 | $95K | +9.0% of holding | 241,000 | Form 4 |
| 2025-11-26 | ABCL | Purchase | 50,000 @ $3.57 | $178K | +29.2% of holding | 221,000 | Form 4 |
| 2025-03-10 | ABCL | Purchase | 25,000 @ $2.30 | $57K | +17.1% of holding | 171,000 | Form 4 |
| 2025-03-06 | ABCL | Purchase | 60,000 @ $2.34 | $141K | +69.8% of holding | 146,000 | Form 4 |
3 award / exercise / gift records — not counted as purchases
Source: SEC Form 4 filings. Each row links to its original filing.
Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.