Keith Crandell

Board Member · 908 Devices Inc.

Rank #1,521 SEC EDGAR (United States) ↗ Files from United States

Details

Member of the boardIndustrial Machinery & EquipmentMASSSEC CIK 0001219039

Computed from SEC EDGAR filings and closing prices — not copied from any wealth ranking. Dataset . How we calculate this.

Disclosed holdings
$70.7M
1-day change
▼ 0.50%
Positions on file
2
issuers disclosed in Forms 3/4/5 and Schedules 13D/G

Disclosed holdings over time 53 weekly points

What the 2 currently disclosed positions would have been worth at each week’s closing price. A rising line means the shares got more valuable, not that this person bought more.

How the line is built

Share counts are as last reported to the SEC and held constant; only prices move.

2025-09-05$32.6M – $76.5M2026-09-04

Insider activity Apr 2, 2024 – Mar 6, 2026

Keith Crandell is recorded in filings to the U.S. SEC via EDGAR as member of the board, and reported 19 transactions between Apr 2, 2024 and Mar 6, 2026. The buy and sell totals below count only codes P, S.

Why the other codes are excluded

Share awards (A), shares withheld to pay tax (F), option exercises (M) and gifts (G) also appear in the table, but they are consequences of a pay package or a private transfer, not a decision to buy or sell on the open market. Counting them would turn this into a compensation ranking.

Open-market buys (code P)
$70.70M
7 purchases on file priced rows only
Open-market sales (code S)
None
0 sales on file
All reported transactions
19
every code, including awards and exercises
Pattern
Net buyer in the final 12 months of the window
last 12 months of the window

Events from filings

Detected automatically in the filings linked below. Each headline is built from the numbers in those filings, not written by a model. Newest first; events older than 45 days stay listed and are marked as older.

4 insiders bought Kardigan, Inc. (KARD) shares worth $80,000,000 on Jun 22, 2026

Cluster buying

4 different insiders made 4 open-market purchases of this company’s shares within a short window. Each row below is one reported trade.

4 insiders bought Kardigan, Inc. (KARD) shares worth $80,000,000 on Jun 22, 2026
Date Insider Transaction Shares Price Value Filing
Jun 22, 2026 Keith Crandell P Open-market purchase 1,250,000 held after: 15,042,035 $16.00 $20,000,000 SEC filing ↗
Jun 22, 2026 Robert Nelsen P Open-market purchase 1,250,000 held after: 15,042,035 $16.00 $20,000,000 SEC filing ↗
Jun 22, 2026 Kristina Burow P Open-market purchase 1,250,000 held after: 15,042,035 $16.00 $20,000,000 SEC filing ↗
Jun 22, 2026 Paul L. Berns P Open-market purchase 1,250,000 held after: 15,042,035 $16.00 $20,000,000 SEC filing ↗

Total of the rows above: $80,000,000, in the currency the filings report.

Source: SEC EDGAR (United States); every row links to where it was published. Event computed Sep 14, 2026.

3 insiders bought Seaport Therapeutics, Inc. (SPTX) shares worth $59,400,000 on May 4, 2026

Cluster buying

3 different insiders made 3 open-market purchases of this company’s shares within a short window. Each row below is one reported trade.

3 insiders bought Seaport Therapeutics, Inc. (SPTX) shares worth $59,400,000 on May 4, 2026
Date Insider Transaction Shares Price Value Filing
May 4, 2026 Keith Crandell P Open-market purchase 1,100,000 held after: 6,294,951 $18.00 $19,800,000 SEC filing ↗
May 4, 2026 Robert Nelsen P Open-market purchase 1,100,000 held after: 6,294,951 $18.00 $19,800,000 SEC filing ↗
May 4, 2026 Kristina Burow P Open-market purchase 1,100,000 held after: 6,294,951 $18.00 $19,800,000 SEC filing ↗

Total of the rows above: $59,400,000, in the currency the filings report.

Source: SEC EDGAR (United States); every row links to where it was published. Event computed Sep 14, 2026.

Reported transactions

Price 0.00 is a real reported figure on gifts (G) and share awards (A) — not a missing number. The 12 most recent rows are grouped into 11 lines by date, company and transaction type — open a line to see every lot with its own source link.

How to read this list

Every row is one line of one Form 4 or Form 5, with the filing it came from. Where the record carries no price at all we leave the cell empty instead of guessing one.

The shares and money on a grouped line add up only the lots listed inside that line, and only when every one of them carries the figure. Where a group mixes more than one reporting currency we leave the money blank rather than convert — no source publishes the rate that conversion would need.

  1. Boundless Bio, Inc. BOLD S Open-market sale 16,000 shares $39.8K at $2.49 SEC filing ↗
  2. Boundless Bio, Inc. BOLD M Option exercise or conversionnot a buy/sell decision 16,000 shares $16.5K at $1.03 SEC filing ↗
  3. Kardigan, Inc. KARD P Open-market purchase 1,250,000 shares $20.00M at $16.00 SEC filing ↗
  4. Kardigan, Inc. KARD C Conversion of derivativenot a buy/sell decisionreported at zero 13,792,035 shares $0 at $0.00 SEC filing ↗
  5. 908 Devices Inc. MASS M Option exercise or conversionnot a buy/sell decisionreported at zero 14,083 shares $0 at $0.00 SEC filing ↗
  6. Seaport Therapeutics, Inc. SPTX P Open-market purchase 1,100,000 shares $19.80M at $18.00 SEC filing ↗
  7. Seaport Therapeutics, Inc. SPTX C Conversion of derivative × 2not a buy/sell decisionreported at zero 5,194,951 shares $0
    The 2 lots that make up this line, each with the source behind it.
    Shares Price Value Filing
    2,681,265 $0.00reported at zero $0 SEC filing ↗
    2,513,686 $0.00reported at zero $0 SEC filing ↗
  8. Twist Bioscience Corp TWST A Grant or awardnot a buy/sell decisionreported at zero 5,095 shares $0 at $0.00 SEC filing ↗
  9. 908 Devices Inc. MASS M Option exercise or conversionnot a buy/sell decisionreported at zero 11,364 shares $0 at $0.00 SEC filing ↗
  10. Twist Bioscience Corp TWST A Grant or awardnot a buy/sell decisionreported at zero 4,472 shares $0 at $0.00 SEC filing ↗
  11. 908 Devices Inc. MASS M Option exercise or conversionnot a buy/sell decisionreported at zero 7,777 shares $0 at $0.00 SEC filing ↗

Disclosed holdings

Shares is the amount on the form; value is that amount times the closing price shown. Rows with no closing price are left blank, so they may add up to less than the headline figure.

What is not counted here

Each row is one filing you can open. Private companies, real estate, bonds and crypto are not in SEC insider filings and are therefore not counted here.

Equity positions disclosed to the SEC, with the source filing behind each row.
Issuer Ticker Security Shares Close Value Form Reported Filing
908 Devices Inc. MASS Common Stock (indirect) 5,750,336 $10.05 $57.8M 4 EDGAR ↗
Twist Bioscience Corp TWST Common Stock (indirect) 103,618 $124.72 $12.9M 4 EDGAR ↗

Other insiders at the same companies

People who also file with the SEC at a company where Keith Crandell reports shares.

Sharing a filing does not mean they work together day to day — it means both names appear on the same issuer’s insider record.

Sources

The filings linked in the tables above are the sources for every figure on this page.

Think a number here is wrong? Open the linked filing and compare — how to report it.

Profile record last refreshed Sep 8, 2026.

Logo credits

Logo credits. Logos on this page are shown to identify the company they belong to; trademarks remain the property of their owner. Files whose licence requires naming the author are listed here. Logos in the public domain or released under CC0 are not listed, because those licences ask for nothing.

Twist Bioscience Corp: Gillian Jarvis / CC BY-SA 4.0, via Wikimedia Commons ↗