Cathal G. Phelan

Cathal G. Phelan

Other Executive · IMPINJ INC

Rank #21,923 SEC EDGAR (United States) ↗ Files from United States

Details

Officer and board memberSemiconductors & Electronic ComponentsPISEC CIK 0001259761

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

Disclosed holdings
$1.8M
1-day change
▼ 1.45%
Positions on file
1
issuers disclosed in Forms 3/4/5 and Schedules 13D/G

Disclosed holdings over time 53 weekly points

What the 1 currently disclosed position 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$956.9K – $2.5M2026-09-04

Insider activity Apr 26, 2024 – May 20, 2025

Cathal G. Phelan is recorded in filings to the U.S. SEC via EDGAR as officer and board member, and reported 33 transactions between Apr 26, 2024 and May 20, 2025. 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)
None
0 purchases on file
Open-market sales (code S)
$4.32M
21 sales on file priced rows only
All reported transactions
33
every code, including awards and exercises
Pattern
Bought and sold in similar amounts
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.

Cathal G. Phelan sold 10,537 IMPINJ INC (PI) shares for $2,114,387 on Nov 8, 2024

Large trade for this person

Flagged because this trade was large compared with this person’s own earlier open-market trades in the same currency — not because it is large in absolute terms. A trade that is routine for one insider can be flagged for another.

Cathal G. Phelan sold 10,537 IMPINJ INC (PI) shares for $2,114,387 on Nov 8, 2024
Date Insider Transaction Shares Price Value Filing
Nov 8, 2024 Cathal G. Phelan S Open-market sale 7,569 held after: 10,078 $200.28 $1,515,919 SEC filing ↗
Nov 8, 2024 Cathal G. Phelan S Open-market sale 2,968 held after: 7,110 $201.64 $598,468 SEC filing ↗

Total of the rows above: $2,114,387, in the currency the filings report.

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

Cathal G. Phelan sold 11,549 IMPINJ INC (PI) shares for $2,319,175 on Nov 8, 2024

Unusual change in a direct holding

Flagged because the change that day in the shares this person holds directly was unusually large compared with their own earlier changes. The rows below are the open-market trades reported that day; under each share count is the balance the filing reports after that line.

Cathal G. Phelan sold 11,549 IMPINJ INC (PI) shares for $2,319,175 on Nov 8, 2024
Date Insider Transaction Shares Price Value Filing
Nov 8, 2024 Cathal G. Phelan S Open-market sale 2,968 held after: 7,110 $201.64 $598,468 SEC filing ↗
Nov 8, 2024 Cathal G. Phelan S Open-market sale 1,012 held after: 6,098 $202.36 $204,788 SEC filing ↗
Nov 8, 2024 Cathal G. Phelan S Open-market sale 7,569 held after: 10,078 $200.28 $1,515,919 SEC filing ↗

Total of the rows above: $2,319,175, 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 25 most recent rows are grouped into 16 lines by date, company and transaction type — open a line to see every lot with its own source link. We hold 33 on file in total. See the full history on EDGAR ↗

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. IMPINJ INC PI M Option exercise or conversionnot a buy/sell decisionreported at zero 1,375 shares $0 at $0.00 SEC filing ↗
  2. IMPINJ INC PI F Shares withheld for taxesnot a buy/sell decision 492 shares $60.7K at $123.33 SEC filing ↗
  3. IMPINJ INC PI F Shares withheld for taxesnot a buy/sell decision 907 shares $81.9K at $90.25 SEC filing ↗
  4. IMPINJ INC PI M Option exercise or conversion × 2not a buy/sell decisionreported at zero 2,530 shares $0
    The 2 lots that make up this line, each with the source behind it.
    Shares Price Value Filing
    2,116 $0.00reported at zero $0 SEC filing ↗
    414 $0.00reported at zero $0 SEC filing ↗
  5. IMPINJ INC PI S Open-market sale × 3 565 shares $55.8K
    The 3 lots that make up this line, each with the source behind it.
    Shares Price Value Filing
    72 $98.47 $7.1K SEC filing ↗
    268 $99.68 $26.7K SEC filing ↗
    225 $97.77 $22.0K SEC filing ↗
  6. IMPINJ INC PI M Option exercise or conversionnot a buy/sell decisionreported at zero 1,375 shares $0 at $0.00 SEC filing ↗
  7. IMPINJ INC PI S Open-market sale × 2 210 shares $30.7K
    The 2 lots that make up this line, each with the source behind it.
    Shares Price Value Filing
    173 $146.20 $25.3K SEC filing ↗
    37 $145.40 $5.4K SEC filing ↗
  8. IMPINJ INC PI M Option exercise or conversionnot a buy/sell decisionreported at zero 413 shares $0 at $0.00 SEC filing ↗
  9. IMPINJ INC PI S Open-market sale 697 shares $129.7K at $186.14 SEC filing ↗
  10. IMPINJ INC PI M Option exercise or conversionnot a buy/sell decisionreported at zero 1,375 shares $0 at $0.00 SEC filing ↗
  11. IMPINJ INC PI S Open-market sale × 3 11,549 shares $2.32M
    The 3 lots that make up this line, each with the source behind it.
    Shares Price Value Filing
    7,569 $200.28 $1.52M SEC filing ↗
    1,012 $202.36 $204.8K SEC filing ↗
    2,968 $201.64 $598.5K SEC filing ↗
  12. IMPINJ INC PI S Open-market sale × 2 209 shares $43.7K
    The 2 lots that make up this line, each with the source behind it.
    Shares Price Value Filing
    59 $209.83 $12.4K SEC filing ↗
    150 $208.88 $31.3K SEC filing ↗
  13. IMPINJ INC PI M Option exercise or conversionnot a buy/sell decisionreported at zero 413 shares $0 at $0.00 SEC filing ↗
  14. IMPINJ INC PI S Open-market sale × 2 677 shares $110.0K
    The 2 lots that make up this line, each with the source behind it.
    Shares Price Value Filing
    206 $162.29 $33.4K SEC filing ↗
    471 $162.53 $76.6K SEC filing ↗
  15. IMPINJ INC PI M Option exercise or conversionnot a buy/sell decisionreported at zero 1,375 shares $0 at $0.00 SEC filing ↗
  16. IMPINJ INC PI S Open-market sale × 2 212 shares $31.3K
    The 2 lots that make up this line, each with the source behind it.
    Shares Price Value Filing
    156 $147.25 $23.0K SEC filing ↗
    56 $148.29 $8.3K 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
IMPINJ INC PI Common Stock 10,431 $172.57 $1.8M 4 EDGAR ↗

Other insiders at the same companies

People who also file with the SEC at a company where Cathal G. Phelan 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.

Portrait photograph: IMPINJ INC (company-published photograph). Original file page on impinj.com ↗

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

Profile record last refreshed Sep 8, 2026.