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Barbara Weber

CIK 1800670 · Director, Executive Chair · last filed 2026-06-11

Barbara Weber is a Director, Executive Chair who has filed 27 SEC Form 4 insider transactions across 4 companies since 2020. The most recent filing, for PBLS, was dated Jun 11, 2026. Across all open-market trades the lifetime net is −$2.4M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $42.1M across reported positions. 9 SEC filings were submitted jointly with Tango Therapeutics, Inc.

"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

$42.12M

Companies

4

Total Filings

27

Lifetime Open-Market Net

-$2.45M

Filer Profile

Reported Address
C/O REVOLUTION MEDICINES, INC.
700 SAGINAW DRIVE
REDWOOD CITY, CA 94063
Related Filers
Tango Therapeutics, Inc. — 9 joint filings, latest 2026-02-04
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

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
PBLS Director — $36.88 — $0 1 2026-06-11
TNGX Director, Executive Chair 1,629,587 $23.78 $38.75M -$547.1K 8 2026-02-04
RVMDW Director 13,065 $11.29 $147.5K -$249.7K 4 2024-10-10
RVMD Director 15,825 $203.77 $3.22M -$1.65M 11 2023-09-06

Recent Filings

27 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
2026-06-11 PBLS Grant (A) — $0 EDGAR
2026-02-04 TNGX Mixed +7,003 -$374.3K EDGAR
2025-02-06 TNGX Sell (S) −18,791 -$57.7K EDGAR
2025-02-05 TNGX Grant (A) +105,875 $0 EDGAR
2024-10-10 RVMDW Sell (S) −5,200 -$249.7K EDGAR
2024-10-08 RVMD Notice (144) −5,200 -$246.2K EDGAR
2024-08-23 RVMDW Disp (D) −1,808 -$81.1K EDGAR
2024-08-21 RVMD Notice (144) −1,808 -$81.1K EDGAR
2024-06-28 RVMDW Grant (A) +4,248 $0 EDGAR
2024-06-24 RVMDW Grant (A) +4,800 $0 EDGAR
Showing 1–10 of 27
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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.