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Andrew A. F. Hack

CIK 1657434 · Chief Financial Officer · last filed 2026-01-06

Andrew A. F. Hack is a Chief Financial Officer who has filed 69 SEC Form 4 insider transactions across 7 companies since 2017. The most recent filing, for MRSN, was dated Jan 6, 2026. Across all open-market trades the lifetime net is −$258.5M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $206.6M across reported positions.

"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

$206.65M

Companies

7

Total Filings

69

Lifetime Open-Market Net

-$258.51M

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
Mersana Therapeutics, Inc. (MRSN) Delisted Director 0 $29.08 $0 $48.36M 22 2026-01-06
NUVL Director 1,449,766 $123.96 $179.71M -$156.54M 8 2024-12-13
DYNAVAX TECHNOLOGIES CORP (DVAX) Delisted Director 925,714 $15.50 $14.35M -$151.66M 15 2023-08-10
Allena Pharmaceuticals, Inc. (ALNA) Delisted Director — $0.07 — $0 3 2020-11-18
AVIR Director 5,365,659 $5.02 $26.94M $6.00M 2 2020-11-03
BCLS Acquisition Corp. (BLSA) Delisted Chief Financial Officer 487,500 $10.04 $4.89M $0 1 2020-10-26
EDIT Chief Financial Officer 0 $2.81 $0 -$4.67M 17 2019-02-06

Recent Filings

69 filings
Insider 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
2026-01-06 Mersana Therapeutics, Inc. (MRSN) Delisted Mixed −347,123 $0 EDGAR
2025-06-13 Mersana Therapeutics, Inc. (MRSN) Delisted Grant (A) — $0 EDGAR
2024-12-13 NUVL Sell (S) −1,250,000 -$110.00M EDGAR
2024-06-14 NUVL Grant (A) +2,499 $0 EDGAR
2024-06-12 Mersana Therapeutics, Inc. (MRSN) Delisted Grant (A) — $0 EDGAR
2024-03-29 NUVL Sell (S) −880,000 -$64.04M EDGAR
2023-11-17 DYNAVAX TECHNOLOGIES CORP (DVAX) Delisted Notice (144) −81,250 -$1.10M EDGAR
2023-08-10 DYNAVAX TECHNOLOGIES CORP (DVAX) Delisted Sell (S) −1,500,000 -$21.59M EDGAR
2023-06-16 NUVL Grant (A) — $0 EDGAR
2023-06-16 DYNAVAX TECHNOLOGIES CORP (DVAX) Delisted Sell (S) −500,000 -$6.34M EDGAR
Showing 1–10 of 69
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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.