Which Members of Congress Traded CoStar Group (CSGP)?
10 members of Congress have disclosed 31 trades in CoStar Group (CSGP) stock between Apr 24, 2014 and Aug 19, 2026: 21 purchases and 10 full or partial sales. In the last 12 months, 1 member disclosed 4 purchases and 1 sale. The latest is Gil Cisneros’s purchase of $1k – $15k on Aug 19, 2026.
Of the 24 trades whose filing names the account owner, 2 werein a spouse’s account and 3 in a joint account.
House PTR filings as of Oct 20, 2026
Senate PTR filings as of Nov 30, 2020 · archive; later Senate trades are not included yet
Who are the members of Congress trading CSGP?
10 members| Member | Party | State | Chamber | Trades | Buys | Sells | Est. volume* | Latest |
|---|---|---|---|---|---|---|---|---|
| Gil Cisneros | D | CA-31 | House | 15 | 14 | 1 | $169k | 2026-08-19 |
| Lamar Smith | R | TX-21 | House | 3 | 2 | 1 | $24k | 2017-09-29 |
| Lisa McClain | R | MI-09 | House | 2 | 1 | 1 | $16k | 2025-09-25 |
| Jefferson Shreve | R | IN-06 | House | 2 | 1 | 1 | $65k | 2025-05-12 |
| Dan Goldman | D | NY-10 | House | 2 | 1 | 1 | $65k | 2023-04-10 |
| Josh Gottheimer | D | NJ-05 | House | 2 | 1 | 1 | $16k | 2021-02-05 |
| Susie Lee | D | NV-03 | House | 2 | 0 | 2 | $16k | 2020-12-22 |
| Robert Bresnahan Jr | R | PA-08 | House | 1 | 0 | 1 | $8k | 2025-05-15 |
| Bill Keating | D | MA-09 | House | 1 | 1 | 0 | $8k | 2025-01-21 |
| Julie Johnson | D | TX-32 | House | 1 | 0 | 1 | $8k | 2025-01-15 |
*Estimated volume adds up the midpoint of each disclosed amount band (e.g. $8,000 for $1,001–$15,000). It is an estimate, not a reported figure. Chamber is the one each trade was filed with.
Are members of Congress buying or selling CSGP?
| Trade year | Trades | Buys | Sells | Members |
|---|---|---|---|---|
| 2026 | 4 | 3 | 1 | 1 |
| 2025 | 16 | 12 | 4 | 6 |
| 2023 | 2 | 1 | 1 | 1 |
| 2021 | 1 | 0 | 1 | 1 |
| 2020 | 3 | 2 | 1 | 2 |
| 2019 | 1 | 0 | 1 | 1 |
| 2018 | 1 | 1 | 0 | 1 |
| 2017 | 1 | 1 | 0 | 1 |
| 2015 | 1 | 0 | 1 | 1 |
| 2014 | 1 | 1 | 0 | 1 |
By the year of the trade. Trades can be reported up to 45 days after they happen, so the latest months fill in as filings arrive.
How quickly were CSGP trades reported?
Days from each trade to the date its periodic transaction report was filed. The STOCK Act asks members to report a trade no later than 45 days after it happens; a later report is a matter of public record, not by itself evidence of wrongdoing. Compare every member on the late-filing tracker.
What are the latest CSGP trades by members of Congress?
Newest 31 of 31| Trade date | Member | Type | Amount | Owner | Filed | Filing |
|---|---|---|---|---|---|---|
| 2026-08-19 | Gil Cisneros · D-CA-31 · House | Buy | $1k – $15k | Self | 2026-09-10 · 22d | PTR |
| 2026-04-14 | Gil Cisneros · D-CA-31 · House | Partial sell | $1k – $15k | Self | 2026-05-08 · 24d | PTR |
| 2026-03-13 | Gil Cisneros · D-CA-31 · House | Buy | $1k – $15k | Self | 2026-04-07 · 25d | PTR |
| 2026-01-28 | Gil Cisneros · D-CA-31 · House | Buy | $1k – $15k | Self | 2026-02-13 · 16d | PTR |
| 2025-12-10 | Gil Cisneros · D-CA-31 · House | Buy | $1k – $15k | Self | 2026-01-12 · 33d | PTR |
| 2025-10-15 | Gil Cisneros · D-CA-31 · House | Buy | $1k – $15k | Self | 2025-11-18 · 34d | PTR |
| 2025-09-30 | Gil Cisneros · D-CA-31 · House | Buy | $1k – $15k | Self | 2025-10-10 · 10d | PTR |
| 2025-09-25 | Lisa McClain · R-MI-09 · House | Sell | $1k – $15k | Spouse | 2025-10-22 · 27d | PTR |
| 2025-09-22 | Gil Cisneros · D-CA-31 · House | Buy | $1k – $15k | Self | 2025-10-10 · 18d | PTR |
| 2025-08-13 | Lisa McClain · R-MI-09 · House | Buy | $1k – $15k | Spouse | 2025-09-12 · 30d | PTR |
| 2025-07-31 | Gil Cisneros · D-CA-31 · House | Buy | $1k – $15k | Self | 2025-08-14 · 14d | PTR |
| 2025-07-09 | Gil Cisneros · D-CA-31 · House | Buy | $1k – $15k | Self | 2025-08-14 · 36d | PTR |
| 2025-06-30 | Gil Cisneros · D-CA-31 · House | Buy | $1k – $15k | Self | 2025-07-10 · 10d | PTR |
| 2025-06-27 | Gil Cisneros · D-CA-31 · House | Buy | $15k – $50k | Self | 2025-07-10 · 13d | PTR |
| 2025-06-25 | Gil Cisneros · D-CA-31 · House | Buy | $1k – $15k | Self | 2025-07-10 · 15d | PTR |
| 2025-05-15 | Robert Bresnahan Jr · R-PA-08 · House | Sell | $1k – $15k | Self | 2025-05-31 · 16d | PTR |
| 2025-05-12 | Jefferson Shreve · R-IN-06 · House | SellAccount Closing | $15k – $50k | Self | 2025-06-22 · 41d | PTR |
| 2025-02-24 | Jefferson Shreve · R-IN-06 · House | BuyPortfolio Rebalance | $15k – $50k | Self | 2025-03-09 · 13d | PTR |
| 2025-01-21 | Bill Keating · D-MA-09 · House | Buy | $1k – $15k | Self | 2025-02-25 · 35d | PTR |
| 2025-01-15 | Julie Johnson · D-TX-32 · House | Sell | $1k – $15k | Joint | 2025-02-12 · 28d | PTR |
| 2023-04-10 | Dan Goldman · D-NY-10 · House | Buy | $15k – $50k | Self | 2023-05-19 · 39d | PTR |
| 2023-03-06 | Dan Goldman · D-NY-10 · House | Sell | $15k – $50k | Self | 2023-04-17 · 42d | PTR |
| 2021-02-05 | Josh Gottheimer · D-NJ-05 · House | Sell | $1k – $15k | Joint | 2021-03-10 · 33d | PTR |
| 2020-12-22 | Susie Lee · D-NV-03 · House | Sell | $1k – $15k | Joint | 2021-01-11 · 20d | PTR |
| 2020-03-30 | Gil Cisneros · D-CA-31 · House | Buy | $1k – $15k | — | 2020-04-16 · 17d | — |
| 2020-03-27 | Gil Cisneros · D-CA-31 · House | Buy | $15k – $50k | — | 2020-04-16 · 20d | — |
| 2019-04-23 | Susie Lee · D-NV-03 · House | Sell | $1k – $15k | — | 2019-05-09 · 16d | — |
| 2018-06-21 | Josh Gottheimer · D-NJ-05 · House | Buy | $1k – $15k | — | 2018-10-02 · 103d | — |
| 2017-09-29 | Lamar Smith · R-TX-21 · House | Buy | $1k – $15k | — | 2017-10-12 · 13d | — |
| 2015-06-03 | Lamar Smith · R-TX-21 · House | Sell | $1k – $15k | — | 2015-07-13 · 40d | — |
| 2014-04-24 | Lamar Smith · R-TX-21 · House | Buy | $1k – $15k | — | 2014-05-06 · 12d | — |
Days after the filing date count from the trade to the report; a highlighted figure is past the 45-day deadline.
What do these records cover?
House trades come from the official House Clerk filings from 2021 on; earlier House rows come from an archive of the same reports. Senate trades come from an archive that ends on Nov 30, 2020. Senators’ CSGP trades after that date are not included until the Senate eFD import is live, so this page undercounts Senate activity since then (0 of the 31 trades here are Senate filings). Scanned paper filings are not itemised, so their trades are not counted.
These are trades reported on periodic transaction reports, not current holdings: a member who bought CSGP may have sold it since, and a position bought before the records start, or held through a fund, does not show here. Amounts are disclosed as bands. This page is educational and is not a recommendation to buy or sell CSGP.
CSGP Congress trades: questions answered from the filings
Which members of Congress have traded CoStar Group (CSGP) stock?
10 members of Congress disclosed 31 trades in CSGP between Apr 24, 2014 and Aug 19, 2026. The most active were Gil Cisneros (D-CA-31, 15 trades), Lamar Smith (R-TX-21, 3 trades) and Lisa McClain (R-MI-09, 2 trades). Senate trades after Nov 30, 2020 are not in these records yet.
Are members of Congress buying or selling CSGP?
Across every disclosed trade, 21 were purchases and 10 were full or partial sales. In the 12 months since Oct 22, 2025, 1 member disclosed 4 purchases and 1 sale.
Who was the latest member of Congress to trade CSGP?
Gil Cisneros (D-CA-31) disclosed a purchase of $1k – $15k dated Aug 19, 2026, reported on Sep 10, 2026 (22 days later). The earliest CSGP trade in these records is Lamar Smith's purchase on Apr 24, 2014.
How much CSGP stock have members of Congress bought and sold?
Periodic transaction reports give an amount band, not an exact value. Taking the midpoint of each band, disclosed purchases add up to about $266k and sales to about $129k; this is an estimate. The largest single disclosed trade was Gil Cisneros's purchase of $15k – $50k on Jun 27, 2025.
How long did members of Congress take to report CSGP trades?
Of the 31 CSGP trades matched to a filing date, the median was reported 22 days after the trade and 90% within 40 days. 1 was filed after the STOCK Act's 45-day deadline, the longest 103 days after the trade.
Do Democrats or Republicans trade CSGP more?
6 Democrats disclosed 23 CSGP trades and 4 Republicans disclosed 8 trades. Democrats account for more of the trades.
Source: periodic transaction reports filed under the STOCK Act with the House Clerk and the Senate. See CoStar Group’s CSGP stock page for insider, 13F and company data, the stocks Congress members are buying, the most active traders in Congress and how we collect this.