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Total declarations
Company
▲ Purchases (7 ops.)
▼ Sales (0 ops.)
Latest filing published 23 Mar 2026 for NEURONES, €60k. Read the official filing
Filing timeline
BuySaleLuc de Chammard
Insider track record
Disclosed buys
7
Disclosed sells
0
Signal history
Closed purchases
Market purchases
7
Positive at T+90
57%
Median T+90
+2.2%
Based on 7 purchases whose 90-day window has closed (published at least 91 days ago), the same population our ranking model reads.
Purchases by company
Since each purchase
- +7.1%Entry €34.45 · Close 16 Oct 2026 €36.90
- -6.1%Entry €39.30 · Close 16 Oct 2026 €36.90
- -4.9%Entry €38.80 · Close 16 Oct 2026 €36.90
- -6.6%Entry €39.50 · Close 16 Oct 2026 €36.90
- -3.1%Entry €44.95 · Close at T+365 €43.55
Entry is the close on the day after publication, the first price a reader could act on. Prices in the listing currency. Past moves are not a forecast.
Luc de Chammard: trading record in brief
Luc de Chammard is a declared insider of Neurones (chief executive), with filings sourced from AMF. Over a trading history stretching from 2 June 2023 to 20 March 2026, the count stands at 12 filings.
On the market, this insider has only ever bought: 7 purchases, €3.7M in total. Unlike grants, an open-market purchase is paid for by the insider, at the market price. So far in 2026, the count stands at 1 purchase and no sales.
The median purchase comes to €60k. 2 out of 7 purchases came within 30 days of a purchase by at least one other insider of the same company. Purchases made close together by different insiders form what is called a cluster. After 7 purchases with a full 90-day history, the hit rate stands at 57% and the median 90-day move at +2.2%. These figures describe past trades and do not predict future prices.
The newest entry dates from 23 March 2026: an open-market purchase of €60k, in Neurones. The median gap between a trade and its publication by AMF is 5 days. For comparison, MAR article 19 gives managers three business days to notify a trade. These figures are compiled from regulatory filings published by AMF. They describe what insiders did and are not a recommendation.
Companies and markets linked to Luc de Chammard
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
Declarations12 total
1,765 shares@ €34.19920.0067% mcap0.0% of flowActionEuronext ParisISIN FR00040502502026DD1102485
Canonical exit: 18 Jun 2026 (T+90)
895 shares@ €38.100.0% of flowActionEuronext ParisISIN FR00040502502025DD1063912
Canonical exit: 14 Jan 2026 (T+90)
429 shares@ €38.71370.0% of flowActionEuronext ParisISIN FR00040502502025DD1061802
Canonical exit: 31 Dec 2025 (T+90)
530 shares@ €39.100.0% of flowActionEuronext ParisISIN FR00040502502025DD1060046
Canonical exit: 24 Dec 2025 (T+90)
200,000 shares@ €40.005.2% of flowActiongré à gréISIN FR00040502502024DD948151
119,503 shares@ €40.603.2% of flowActiongré à gréISIN FR00040502502024DD948153
67,833 shares@ €40.601.8% of flowActiongré à gréISIN FR00040502502024DD947410
Canonical exit: 7 Sept 2023 (T+90)
580,000 shares@ €38.4514.5% of flowActionHors plateforme de négociationISIN FR00040502502023DD917855
2,116,185 shares@ €40.6056.0% of flowActionHors plateforme de négociationISIN FR00040502502023DD914974
705,395 shares@ €40.6018.7% of flowActionHors plateforme de négociationISIN FR00040502502023DD914980
14,235 shares@ €40.600.4% of flowActionHors plateforme de négociationISIN FR00040502502023DD914953
Canonical exit: 10 Sept 2023 (T+90)
4,773 shares@ €40.600.1% of flowActionHors plateforme de négociationISIN FR00040502502023DD914959
Canonical exit: 10 Sept 2023 (T+90)
12 of 12 declarations
