Alfred Sandrock
CIK 1577061 · President and CEO · last filed 2026-04-03
"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
$3.72M
Companies
3
Total Filings
75
Lifetime Open-Market Net
-$17.93M
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.
Recent Filings · Page 5 of 8
75 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 |
|---|---|---|---|---|---|
| 2018-02-20 | BIIB | Sell (S) | −1,294 | -$386.7K | EDGAR |
| 2018-02-20 | BIIB | Mixed | +743 | -$178.4K | EDGAR |
| 2018-02-14 | BIIB | Mixed | +696 | -$416.7K | EDGAR |
| 2017-06-08 | NBIX | Grant (A) | — | $0 | EDGAR |
| 2017-04-04 | BIIB | Sell (S) | −1,981 | -$543.0K | EDGAR |
| 2017-03-03 | BIIB | Sell (S) | −973 | -$282.2K | EDGAR |
| 2017-03-02 | BIIB | Mixed | +1,804 | -$829.2K | EDGAR |
| 2017-02-17 | BIIB | Grant (A) | — | $0 | EDGAR |
| 2016-05-24 | NBIX | Grant (A) | — | $0 | EDGAR |
| 2016-02-26 | BIIB | Sell (S) | −183 | -$47.9K | 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.