Natalie Sacks
CIK 1683811 · Chief Medical Officer · last filed 2026-02-20
"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
$0
Companies
4
Total Filings
36
Lifetime Open-Market Net
-$1.37M
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 |
|---|---|---|---|---|---|---|---|
| CRBU | Director | — | $1.64 | — | $0 | 5 | 2026-02-20 |
| ZYME | Director | — | $23.13 | — | $0 | 4 | 2022-12-23 |
| Harpoon Therapeutics, Inc. (HARP) Delisted | Chief Medical Officer | 4,575 | $23.01 | $105.3K | -$1.27M | 19 | 2022-02-01 |
| CHINOOK THERAPEUTICS, INC. (ADRO) Delisted | Chief Medical Officer | 173,720 | — | — | -$109.0K | 8 | 2018-09-14 |
Recent Filings · Page 4 of 4
36 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 |
|---|---|---|---|---|---|
| 2018-02-12 | CHINOOK THERAPEUTICS, INC. (ADRO) Delisted | Grant (A) | — | $0 | EDGAR |
| 2017-12-13 | CHINOOK THERAPEUTICS, INC. (ADRO) Delisted | Grant (A) | +16,312 | $0 | EDGAR |
| 2017-09-14 | CHINOOK THERAPEUTICS, INC. (ADRO) Delisted | Grant (A) | +32,625 | $0 | EDGAR |
| 2017-09-06 | CHINOOK THERAPEUTICS, INC. (ADRO) Delisted | Sell (S) | −4,885 | -$57.2K | EDGAR |
| 2017-06-14 | CHINOOK THERAPEUTICS, INC. (ADRO) Delisted | Grant (A) | — | $0 | EDGAR |
| 2016-09-14 | CHINOOK THERAPEUTICS, INC. (ADRO) Delisted | Grant (A) | +50,000 | $0 | EDGAR |
Showing 31–36 of 36
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Page 4 of 4
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.