Stefan A Dyckerhoff
CIK 1484394 · EVP Platform Systems Division · last filed 2026-08-10
"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
$101.40M
Companies
10
Total Filings
50
Lifetime Open-Market Net
-$68.94M
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 |
|---|---|---|---|---|---|---|---|
| ALAB | Director | 362,273 | $279.91 | $101.40M | -$62.99M | 15 | 2026-08-10 |
| SNOW | 10%+ Owner | — | $319.80 | — | $0 | 2 | 2020-09-22 |
| Forty Seven, Inc. (FTSV) Delisted | 41,305 | — | — | $2.19M | 1 | 2018-07-03 | |
| Everpure, Inc. (PSTG) Delisted | 10%+ Owner | 25,520 | $67.80 | $1.73M | -$860.8K | 5 | 2018-01-12 |
| YEXT | 10%+ Owner | 0 | $6.53 | $0 | $0 | 2 | 2017-12-05 |
| Venus Concept Inc. (HAIR) Delisted | 10%+ Owner | 1,183 | — | — | $0 | 2 | 2017-10-18 |
| Mattersight Corp (MATR) Delisted | 10%+ Owner | 852,651 | — | — | -$5.65M | 4 | 2017-06-02 |
| Molecular Templates, Inc. (THLD) Delisted | 10%+ Owner | 449,278 | — | — | -$2.35M | 2 | 2014-10-03 |
| DEXTERA SURGICAL INC (CRDC) Delisted | 10%+ Owner | 9,726 | — | — | $1.05M | 1 | 2013-03-22 |
| JUNIPER NETWORKS INC (JNPR) Delisted | EVP Platform Systems Division | 0 | $39.95 | $0 | -$326.8K | 5 | 2012-02-21 |
Recent Filings · Page 2 of 5
50 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 |
|---|---|---|---|---|---|
| 2025-08-15 | ALAB | Gift (G) | −11,000 | $0 | EDGAR |
| 2025-08-11 | ALAB | Sell (S) | −52,000 | -$9.07M | EDGAR |
| 2025-08-08 | ALAB | Notice (144) | −26,000 | -$4.56M | EDGAR |
| 2025-08-07 | ALAB | Notice (144) | −26,000 | -$4.51M | EDGAR |
| 2025-06-10 | ALAB | Grant (A) | +2,351 | $0 | EDGAR |
| 2024-11-26 | ALAB | Notice (144) | −15,629 | -$1.67M | EDGAR |
| 2024-11-26 | ALAB | Sell (S) | −45,629 | -$4.85M | EDGAR |
| 2024-11-22 | ALAB | Notice (144) | −30,000 | -$3.18M | EDGAR |
| 2024-11-20 | ALAB | Sell (S) | −203,445 | -$18.44M | EDGAR |
| 2024-11-13 | ALAB | Sell (S) | −50,000 | -$4.60M | 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.