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Buy track record

How this insider's open-market purchases have performed
This insider has no open-market purchases in the records we parsed, so there's no buy track record to score. Their full filing history is below.
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Open-market buys
$41.29M
67 trades
Open-market sells
$32.48M
47 trades
Net flow
+$8.81M
Net buying
Total filings
124
transactions shown

Full transaction history

All Form 4 activity across every company, newest first
View on SEC EDGAR ↗
NGM
Buy COLUMN GROUP L P · Director, 10% Owner · Open-market purchase · filed Nov 17, 2023 ΔOwn +0.6%

Column Group L P, NGM's 10% owner, spent $3.6K of their own money on 5,840 shares at $1, growing their stake 1%.

+$3.6K
5,840 sh @ $1
NGM
Buy COLUMN GROUP L P · Director, 10% Owner · Open-market purchase · filed Nov 17, 2023 ΔOwn +1.8%

Column Group L P, NGM's 10% owner, spent $11.9K of their own money on 16,791 shares at $1, growing their stake 2%.

+$11.9K
16,791 sh @ $1
NGM
Buy COLUMN GROUP L P · Director, 10% Owner · Open-market purchase · filed Feb 1, 2023 ΔOwn +24%

Column Group L P, NGM's 10% owner, spent $883.4K of their own money on 176,730 shares at $5, growing their stake 24%.

+$883.4K
176,730 sh @ $5
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NGM
Buy COLUMN GROUP L P · Director, 10% Owner · Open-market purchase · filed Feb 1, 2023 ΔOwn +1.0%

Column Group L P, NGM's 10% owner, spent $37.7K of their own money on 7,542 shares at $5, growing their stake 1%.

+$37.7K
7,542 sh @ $5
NGM
Buy COLUMN GROUP L P · Director, 10% Owner · Open-market purchase · filed Jan 25, 2023 ΔOwn +1.4%

Column Group L P, NGM's 10% owner, spent $49.5K of their own money on 9,900 shares at $5, growing their stake 1%.

+$49.5K
9,900 sh @ $5
NGM
Buy COLUMN GROUP L P · Director, 10% Owner · Open-market purchase · filed Jan 23, 2023 ΔOwn +0.1%

Column Group L P, NGM's 10% owner, spent $2.5K of their own money on 500 shares at $5.

+$2.5K
500 sh @ $5
NGM
Buy COLUMN GROUP L P · Director, 10% Owner · Open-market purchase · filed Jan 23, 2023 ΔOwn +5.4%

Column Group L P, NGM's 10% owner, spent $188.1K of their own money on 37,639 shares at $5, growing their stake 5%.

+$188.1K
37,639 sh @ $5
NGM
Buy COLUMN GROUP L P · Director, 10% Owner · Open-market purchase · filed Jan 17, 2023 ΔOwn +0.8%

Column Group L P, NGM's 10% owner, spent $26.6K of their own money on 5,378 shares at $5, growing their stake 1%.

+$26.6K
5,378 sh @ $5
NGM
Buy COLUMN GROUP L P · Director, 10% Owner · Open-market purchase · filed Jan 12, 2023 ΔOwn +43%

Column Group L P, NGM's 10% owner, spent $994.8K of their own money on 209,000 shares at $5, growing their stake 43%.

+$994.8K
209,000 sh @ $5
NGM
Buy COLUMN GROUP L P · Director, 10% Owner · Open-market purchase · filed Jan 12, 2023 ΔOwn +26%

Column Group L P, NGM's 10% owner, spent $484.5K of their own money on 100,070 shares at $5, growing their stake 26%.

+$484.5K
100,070 sh @ $5
NGM
Buy COLUMN GROUP L P · Director, 10% Owner · Open-market purchase · filed Dec 14, 2022 ΔOwn +0.1%

Column Group L P, NGM's 10% owner, spent $1.5K of their own money on 300 shares at $5.

+$1.5K
300 sh @ $5
NGM
Buy COLUMN GROUP L P · Director, 10% Owner · Open-market purchase · filed Nov 23, 2022 ΔOwn +1.2%

Column Group L P, NGM's 10% owner, spent $21.6K of their own money on 4,330 shares at $5, growing their stake 1%.

+$21.6K
4,330 sh @ $5
NGM
Buy COLUMN GROUP L P · Director, 10% Owner · Open-market purchase · filed Nov 23, 2022 ΔOwn +11%

Column Group L P, NGM's 10% owner, spent $179.9K of their own money on 35,997 shares at $5, growing their stake 11%.

+$179.9K
35,997 sh @ $5
NGM
Buy COLUMN GROUP L P · Director, 10% Owner · Open-market purchase · filed Nov 7, 2022 ΔOwn +12%

Column Group L P, NGM's 10% owner, spent $165.3K of their own money on 35,058 shares at $5, growing their stake 12%.

+$165.3K
35,058 sh @ $5
NGM
Buy COLUMN GROUP L P · Director, 10% Owner · Open-market purchase · filed Nov 7, 2022 ΔOwn +52%

Column Group L P, NGM's 10% owner, spent $519.1K of their own money on 104,090 shares at $5, growing their stake 52%.

+$519.1K
104,090 sh @ $5
NGM
Buy COLUMN GROUP L P · Director, 10% Owner · Open-market purchase · filed Oct 31, 2022 ΔOwn +62%

Column Group L P, NGM's 10% owner, spent $373.6K of their own money on 76,877 shares at $5, growing their stake 62%.

+$373.6K
76,877 sh @ $5
NGM
Buy COLUMN GROUP L P · Director, 10% Owner · Open-market purchase · filed Oct 27, 2022 ΔOwn +143%

Column Group L P, NGM's 10% owner, spent $353K of their own money on 72,774 shares at $5, growing their stake 143%.

+$353K
72,774 sh @ $5
NGM
Buy COLUMN GROUP L P · Director, 10% Owner · Open-market purchase · filed Oct 27, 2022 ΔOwn NEW

Column Group L P, NGM's 10% owner, spent $242.4K of their own money on 51,046 shares at $5, opening a brand-new position.

+$242.4K
51,046 sh @ $5
NGM
Buy COLUMN GROUP L P · Director, 10% Owner · Open-market purchase · filed Jun 13, 2022 ΔOwn +56%

Column Group L P, NGM's 10% owner, spent $12.85M of their own money on 951,684 shares at $14, growing their stake 56%.

+$12.85M
951,684 sh @ $14
NGM
Buy COLUMN GROUP L P · Director, 10% Owner · Open-market purchase · filed Jun 13, 2022 ΔOwn +56%

Column Group L P, NGM's 10% owner, spent $438.4K of their own money on 32,477 shares at $14, growing their stake 56%.

+$438.4K
32,477 sh @ $14
NGM
Buy COLUMN GROUP L P · Director, 10% Owner · Open-market purchase · filed Jun 6, 2022 ΔOwn +2.0%

Column Group L P, NGM's 10% owner, spent $431K of their own money on 33,071 shares at $13, growing their stake 2%.

+$431K
33,071 sh @ $13
NGM
Buy COLUMN GROUP L P · Director, 10% Owner · Open-market purchase · filed Jun 6, 2022 ΔOwn +2.0%

Column Group L P, NGM's 10% owner, spent $14.7K of their own money on 1,129 shares at $13, growing their stake 2%.

+$14.7K
1,129 sh @ $13
NGM
Buy COLUMN GROUP L P · Director, 10% Owner · Open-market purchase · filed Jun 2, 2022 ΔOwn +5.6%

Column Group L P, NGM's 10% owner, spent $1.2M of their own money on 88,964 shares at $13, growing their stake 6%.

+$1.2M
88,964 sh @ $13
NGM
Buy COLUMN GROUP L P · Director, 10% Owner · Open-market purchase · filed Jun 2, 2022 ΔOwn +5.6%

Column Group L P, NGM's 10% owner, spent $40.8K of their own money on 3,036 shares at $13, growing their stake 6%.

+$40.8K
3,036 sh @ $13
NGM
Buy COLUMN GROUP L P · Director, 10% Owner · Open-market purchase · filed Jun 2, 2022 ΔOwn +3.9%

Column Group L P, NGM's 10% owner, spent $804.8K of their own money on 59,766 shares at $13, growing their stake 4%.

+$804.8K
59,766 sh @ $13
NGM
Buy COLUMN GROUP L P · Director, 10% Owner · Open-market purchase · filed Jun 2, 2022 ΔOwn +3.9%

Column Group L P, NGM's 10% owner, spent $27.5K of their own money on 2,040 shares at $13, growing their stake 4%.

+$27.5K
2,040 sh @ $13
NGM
Buy COLUMN GROUP L P · Director, 10% Owner · Open-market purchase · filed May 31, 2022 ΔOwn +0.2%

Column Group L P, NGM's 10% owner, spent $35.3K of their own money on 2,621 shares at $13.

+$35.3K
2,621 sh @ $13
NGM
Buy COLUMN GROUP L P · Director, 10% Owner · Open-market purchase · filed May 31, 2022 ΔOwn +0.2%

Column Group L P, NGM's 10% owner, spent $1.2K of their own money on 89 shares at $13.

+$1.2K
89 sh @ $13

Frequently asked questions

How is COLUMN GROUP II, LP's win rate calculated?

We take every open-market purchase (SEC code P) we can match to a stock price, then compare the split- and dividend-adjusted price on the purchase date to the most recent close. The win rate is the share of those buys currently trading above the purchase price. Sales and share grants are not scored.

Why are some buys not included in the score?

A purchase is excluded if we can't price it — for example if the ticker is missing from the filing, the company has been delisted, or the security isn't a common stock we can match to market data. Excluded counts are shown next to the scored total.

What do the 1M / 3M / 6M / 12M columns mean?

They show each purchase's return after a fixed holding period — one, three, six, and twelve months from the buy date — using split- and dividend-adjusted prices. This separates good entry timing from simply holding a long-running winner. A dash means that horizon hasn't elapsed yet for that trade, or the stock couldn't be priced at that date.

Does a high win rate mean I should copy this insider?

No. Past performance does not predict future results, sample sizes are often small, and an insider's edge in their own company doesn't transfer to yours. This is context, not a recommendation. InsiderSource is not investment advice.

Where does this data come from?

Trades come from COLUMN GROUP II, LP's SEC Form 4 filings on EDGAR. Prices come from public market data and are split/dividend-adjusted. Always verify against the original filings before acting.