Joseph H. IV Griffith
CIK 1431531 · Chief Financial Officer · last filed 2026-05-29
"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.
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Disclosed Exposure
$1.33M
Companies
3
Total Filings
47
Lifetime Open-Market Net
-$4.33M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| MASS | Chief Financial Officer | 132,956 | $10.01 | $1.33M | -$4.33M | 25 | 2026-05-29 |
| CALIPER LIFE SCIENCES INC (CALP) Delisted | VP, Finance & Controller | 0 | — | — | $0 | 1 | 2011-11-07 |
| CALIPER LIFE SCIENCES INC (CALPW) Delisted | VP, Finance & Controller | 42,256 | — | — | $0 | 14 | 2011-07-05 |
Recent Filings · Page 2 of 5
47 filingsInsider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-02-04 | MASS | Mixed | +16,433 | -$24.0K | EDGAR |
| 2024-03-27 | MASS | Exer (M) | +8,437 | $13.3K | EDGAR |
| 2024-03-05 | MASS | Grant (A) | — | $0 | EDGAR |
| 2024-02-02 | MASS | Notice (144) | −9,711 | -$70.0K | EDGAR |
| 2024-02-02 | MASS | Mixed | — | -$108.8K | EDGAR |
| 2024-01-02 | MASS | Sell (S) | −6,000 | -$72.5K | EDGAR |
| 2023-12-28 | MASS | Notice (144) | −6,000 | -$60.5K | EDGAR |
| 2023-12-21 | MASS | Sell (S) | −5,580 | -$50.7K | EDGAR |
| 2023-12-19 | MASS | Notice (144) | −5,580 | -$42.7K | EDGAR |
| 2023-03-23 | MASS | Exer (M) | +5,000 | $7.9K | EDGAR |
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.