| 2026 |
| 02/25 | (IR情報)16:00 当社株式の上場廃止に関するお知らせ |
| 02/25 | 4,115 | 4,120 | 4,115 | 4,115 | 0% | 5,900 | 249億2430万 | -0.02% |
| 02/24 | 4,115 | 4,120 | 4,115 | 4,115 | +0.12% | 10,600 | 249億2430万 | -0.02% |
| 02/20 | 4,115 | 4,115 | 4,110 | 4,110 | -0.12% | 3,700 | 248億9401万 | -0.17% |
| 02/19 | 4,115 | 4,115 | 4,115 | 4,115 | 0% | 4,300 | 249億2430万 | -0.07% |
| 02/18 | 4,115 | 4,120 | 4,115 | 4,115 | 0% | 4,100 | 249億2430万 | -0.05% |
| 02/17 | 4,115 | 4,115 | 4,110 | 4,115 | 0% | 7,900 | 249億2430万 | -0.05% |
| 02/16 | 4,115 | 4,115 | 4,115 | 4,115 | 0% | 2,600 | 249億2430万 | -0.05% |
| 02/13 | 4,110 | 4,120 | 4,110 | 4,115 | +0.12% | 8,600 | 249億2430万 | -0.05% |
| 02/12 | 4,115 | 4,120 | 4,110 | 4,110 | -0.12% | 9,600 | 248億9401万 | -0.17% |
| 02/10 | 4,120 | 4,120 | 4,115 | 4,115 | -0.12% | 200 | 249億2430万 | -0.05% |
| 02/09 | 4,115 | 4,120 | 4,115 | 4,120 | 0% | 1,800 | 249億5458万 | +0.07% |
| 02/06 | 4,115 | 4,125 | 4,115 | 4,120 | +0.24% | 6,600 | 249億5458万 | +0.07% |
| 02/05 | 4,110 | 4,115 | 4,110 | 4,110 | 0% | 12,200 | 248億9401万 | -0.15% |
| 02/04 | 4,110 | 4,115 | 4,110 | 4,110 | 0% | 500 | 248億9401万 | -0.15% |
| 02/03 | (IR情報)11:30 2026年3月期第3四半期芦森グループ決算説明資料 |
| 02/03 | (IR情報)11:30 2026年3月期第3四半期決算短信[日本基準](連結) |
| 02/03 | 4,110 | 4,110 | 4,105 | 4,110 | 0% | 4,700 | 248億9401万 | -0.12% |
| 02/02 | 4,110 | 4,110 | 4,110 | 4,110 | 0% | 3,200 | 248億9401万 | -0.12% |
| 01/30 | 4,110 | 4,110 | 4,110 | 4,110 | 0% | 22,300 | 248億9401万 | -0.12% |
| 01/29 | 4,110 | 4,115 | 4,105 | 4,110 | -0.48% | 30,300 | 248億9401万 | -0.12% |
| 01/28 | 4,110 | 4,130 | 4,105 | 4,130 | +0.49% | 43,500 | 250億1515万 | +0.34% |
| 01/27 | (IR情報)16:00 株式併合並びに単元株式数の定めの廃止及び定款の一部変更に係る承認決議に関するお知らせ |
| 01/27 | 4,115 | 4,120 | 4,110 | 4,110 | -0.12% | 5,400 | 248億9401万 | -0.15% |
| 01/26 | 4,115 | 4,115 | 4,115 | 4,115 | -0.48% | 1,100 | 249億2430万 | -0.02% |
| 01/23 | 4,115 | 4,135 | 4,115 | 4,135 | +0.49% | 4,000 | 250億4544万 | +0.44% |
| 01/22 | (5%ルール)豊田合成(65.58%) |
| 01/22 | 4,120 | 4,120 | 4,115 | 4,115 | -0.12% | 300 | 249億2430万 | -0.02% |
| 01/21 | 4,125 | 4,125 | 4,120 | 4,120 | -0.12% | 300 | 249億5458万 | +0.07% |
| 01/20 | 4,125 | 4,130 | 4,125 | 4,125 | -0.24% | 600 | 249億8487万 | +0.19% |
| 01/19 | 4,125 | 4,135 | 4,125 | 4,135 | +0.24% | 4,900 | 250億4544万 | +0.44% |
| 01/16 | 4,120 | 4,130 | 4,120 | 4,125 | -0.12% | 14,500 | 249億8487万 | +0.22% |
| 01/15 | 4,110 | 4,130 | 4,110 | 4,130 | +0.49% | 8,400 | 250億1515万 | +0.34% |
| 01/14 | 4,115 | 4,115 | 4,110 | 4,110 | -0.12% | 12,400 | 248億9401万 | -0.12% |
| 01/13 | 4,115 | 4,115 | 4,115 | 4,115 | 0% | 11,100 | 249億2430万 | 0% |
| 01/09 | 4,125 | 4,125 | 4,115 | 4,115 | 0% | 5,700 | 249億2430万 | 0% |
| 01/08 | 4,115 | 4,125 | 4,115 | 4,115 | 0% | 15,000 | 249億2430万 | 0% |
| 01/07 | 4,115 | 4,120 | 4,115 | 4,115 | +0.12% | 10,900 | 249億2430万 | +0.02% |
| 01/06 | 4,110 | 4,130 | 4,110 | 4,110 | 0% | 6,400 | 248億9401万 | -0.1% |
| 01/05 | 4,110 | 4,120 | 4,110 | 4,110 | +0.12% | 6,900 | 248億9401万 | -0.1% |
| 2025 |
| 12/30 | 4,105 | 4,110 | 4,105 | 4,105 | 0% | 8,600 | 248億6373万 | -0.24% |
| 12/29 | 4,105 | 4,110 | 4,105 | 4,105 | 0% | 4,700 | 248億6373万 | -0.27% |
| 12/26 | 4,105 | 4,125 | 4,105 | 4,105 | +0.12% | 10,500 | 248億6373万 | -0.29% |
| 12/25 | (5%ルール)豊田合成(64.49%) |
| 12/25 | 4,110 | 4,120 | 4,100 | 4,100 | -0.12% | 3,700 | 248億3344万 | -0.44% |
| 12/24 | 4,110 | 4,120 | 4,105 | 4,105 | 0% | 15,100 | 248億6373万 | -0.34% |
| 12/23 | (IR情報)15:00 (訂正)「株式併合並びに単元株式数の定めの廃止及び定款の一部変更に関するお知らせ」の一部訂正について |
| 12/23 | 4,115 | 4,120 | 4,105 | 4,105 | -0.24% | 16,300 | 248億6373万 | -0.34% |
| 12/22 | 4,125 | 4,130 | 4,115 | 4,115 | -0.24% | 19,400 | 249億2430万 | -0.1% |
| 12/19 | (IR情報)16:00 自己株式の消却に関するお知らせ |
| 12/19 | (IR情報)16:00 株式併合並びに単元株式数の定めの廃止及び定款の一部変更に関するお知らせ |
| 12/19 | 4,125 | 4,130 | 4,125 | 4,125 | 0% | 13,600 | 249億8487万 | +0.17% |
| 12/18 | 4,125 | 4,130 | 4,120 | 4,125 | 0% | 23,400 | 249億8487万 | +0.17% |
| 12/17 | 4,125 | 4,130 | 4,125 | 4,125 | 0% | 17,800 | 249億8487万 | +0.17% |
| 12/16 | (5%ルール)豊田合成(63.42%) |
| 12/16 | (5%ルール)宇内章起(6.77%) |
| 12/16 | 4,125 | 4,135 | 4,125 | 4,125 | 0% | 10,400 | 249億8487万 | +0.15% |
| 12/15 | 4,130 | 4,135 | 4,120 | 4,125 | 0% | 12,600 | 249億8487万 | +0.12% |
| 12/12 | 4,135 | 4,140 | 4,125 | 4,125 | 0% | 10,000 | 249億8487万 | +0.1% |
| 12/11 | 4,125 | 4,135 | 4,120 | 4,125 | 0% | 10,200 | 249億8487万 | +0.07% |
| 12/10 | 4,130 | 4,135 | 4,120 | 4,125 | +0.12% | 8,200 | 249億8487万 | +0.05% |
| 12/09 | 4,120 | 4,125 | 4,115 | 4,120 | +0.12% | 12,900 | 249億5458万 | -0.1% |
| 12/08 | 4,115 | 4,125 | 4,110 | 4,115 | 0% | 8,300 | 249億2430万 | -0.22% |
| 12/05 | 4,110 | 4,115 | 4,110 | 4,115 | +0.12% | 12,700 | 249億2430万 | -0.22% |
| 12/04 | 4,110 | 4,130 | 4,110 | 4,110 | 0% | 7,600 | 248億9401万 | -0.39% |
| 12/03 | 4,105 | 4,130 | 4,105 | 4,110 | 0% | 13,400 | 248億9401万 | -0.41% |
| 12/02 | 4,100 | 4,115 | 4,100 | 4,110 | +0.12% | 11,500 | 248億9401万 | -0.46% |
| 12/01 | 4,105 | 4,105 | 4,095 | 4,105 | 0% | 20,100 | 248億6373万 | -0.68% |
| 11/28 | 4,110 | 4,120 | 4,105 | 4,105 | 0% | 13,000 | 248億6373万 | -0.77% |
| 11/27 | (5%ルール)MI2(9.89%)MI5(0.33%)MI1(4.08%)村上貴輝(9.89%) |
| 11/27 | 4,140 | 4,140 | 4,105 | 4,105 | -0.85% | 10,800 | 248億6373万 | -0.82% |
| 11/26 | (5%ルール)豊田合成(62.37%) |
| 11/26 | 4,140 | 4,150 | 4,140 | 4,140 | 0% | 14,100 | 250億7572万 | -0.02% |
| 11/25 | 4,140 | 4,150 | 4,135 | 4,140 | +0.24% | 15,200 | 250億7572万 | -0.02% |
| 11/21 | 4,120 | 4,145 | 4,120 | 4,130 | +0.36% | 15,600 | 250億1515万 | -0.24% |
| 11/20 | 4,135 | 4,145 | 4,115 | 4,115 | -0.12% | 41,100 | 249億2430万 | -0.6% |
| 11/19 | 4,135 | 4,140 | 4,120 | 4,120 | +0.24% | 12,900 | 249億5458万 | -0.48% |
| 11/18 | (5%ルール)MI2(9.89%)MI1(3.07%)MI5(0.33%)村上貴輝(9.89%) |
| 11/18 | 4,105 | 4,135 | 4,105 | 4,110 | +0.24% | 27,900 | 248億9401万 | -0.75% |
| 11/17 | 4,110 | 4,120 | 4,100 | 4,100 | -0.24% | 25,800 | 248億3344万 | -1.01% |
| 11/14 | 4,110 | 4,120 | 4,110 | 4,110 | 0% | 32,700 | 248億9401万 | -0.8% |
| 11/13 | (IR情報)16:00 臨時株主総会招集のための基準日の取消し及び再設定に関するお知らせ |
| 11/13 | 4,140 | 4,145 | 4,110 | 4,110 | -0.72% | 63,100 | 248億9401万 | -0.82% |
| 11/12 | 4,145 | 4,150 | 4,140 | 4,140 | 0% | 51,100 | 250億7572万 | -0.12% |
| 11/11 | 4,140 | 4,145 | 4,135 | 4,140 | -0.12% | 43,900 | 250億7572万 | -0.12% |
| 11/10 | (5%ルール)MI1(1.96%)村上貴輝(9.89%)MI5(0.33%)MI2(9.89%) |
| 11/10 | 4,160 | 4,160 | 4,140 | 4,145 | -0.24% | 45,100 | 251億601万 | -0.02% |
| 11/07 | (IR情報)16:00 2026年3月期第2四半期(中間期)芦森グループ決算説明資料 |
| 11/07 | (IR情報)16:00 臨時株主総会招集のための基準日設定に関するお知らせ |
| 11/07 | (IR情報)16:00 2026年3月期第2四半期(中間期)決算短信[日本基準](連結) |
| 11/07 | 4,180 | 4,190 | 4,155 | 4,155 | -0.12% | 5,600 | 251億6658万 | +0.22% |
| 11/06 | (5%ルール)MI5(0.33%)MI2(9.55%)MI1(1.1%)村上貴輝(9.89%) |
| 11/06 | (5%ルール)芦森工業取引先持株会理事長宇内章起(0%) |
| 11/06 | 4,140 | 4,195 | 4,140 | 4,160 | +0.48% | 33,300 | 251億9686万 | +0.36% |
| 11/05 | 4,140 | 4,145 | 4,140 | 4,140 | 0% | 23,900 | 250億7572万 | -0.1% |
| 11/04 | 4,135 | 4,155 | 4,135 | 4,140 | +0.12% | 24,400 | 250億7572万 | -0.1% |
| 10/31 | (5%ルール)豊田合成(61.01%) |
| 10/31 | (IR情報)11:30 その他の関係会社である豊田合成株式会社による当社株券等に対する公開買付けの結果及び親会社の異動に関するお知らせ |
| 10/31 | 4,105 | 4,175 | 4,100 | 4,135 | +0.36% | 94,200 | 250億4544万 | -0.27% |
| 10/30 | 4,145 | 4,150 | 4,110 | 4,120 | -0.6% | 97,600 | 249億5458万 | -0.72% |
| 10/29 | 4,135 | 4,175 | 4,135 | 4,145 | +0.12% | 71,300 | 251億601万 | -0.14% |
| 10/28 | 4,145 | 4,155 | 4,135 | 4,140 | -0.84% | 73,700 | 250億7572万 | -0.24% |
| 10/27 | 4,200 | 4,220 | 4,145 | 4,175 | -0.71% | 102,700 | 252億8772万 | +0.6% |
| 10/24 | 4,190 | 4,260 | 4,160 | 4,205 | +0.24% | 29,900 | 254億6942万 | +1.37% |
| 10/23 | 4,170 | 4,225 | 4,160 | 4,195 | +0.84% | 68,300 | 254億885万 | +1.21% |
| 10/22 | 4,145 | 4,175 | 4,140 | 4,160 | +0.36% | 64,100 | 251億9686万 | +0.41% |
| 10/21 | 4,135 | 4,150 | 4,135 | 4,145 | +0.12% | 178,300 | 251億601万 | +0.07% |
| 10/20 | 4,135 | 4,140 | 4,130 | 4,140 | +0.12% | 76,800 | 250億7572万 | -0.05% |
| 10/17 | 4,130 | 4,140 | 4,130 | 4,135 | +0.49% | 97,400 | 250億4544万 | -0.29% |
| 10/16 | (IR情報)15:15 (変更)「その他の関係会社である豊田合成株式会社による当社株券等に対する公開買付けに関する賛同の意見表明及び応募推奨のお知らせ」の変更に関するお知らせ |
| 10/16 | 4,145 | 4,165 | 4,080 | 4,115 | -0.36% | 173,100 | 249億2430万 | -0.89% |
| 10/15 | 4,120 | 4,150 | 4,120 | 4,130 | 0% | 38,900 | 250億1515万 | -0.7% |
| 10/14 | 4,135 | 4,140 | 4,115 | 4,130 | -0.12% | 55,800 | 250億1515万 | -0.86% |
| 10/10 | 4,140 | 4,140 | 4,135 | 4,135 | 0% | 38,300 | 250億4544万 | -0.93% |
| 10/09 | 4,140 | 4,140 | 4,135 | 4,135 | 0% | 40,100 | 250億4544万 | -1.03% |
| 10/08 | 4,140 | 4,145 | 4,135 | 4,135 | 0% | 21,200 | 250億4544万 | -1.1% |
| 10/07 | 4,145 | 4,145 | 4,135 | 4,135 | -0.24% | 40,300 | 250億4544万 | -1.22% |
| 10/06 | 4,145 | 4,165 | 4,140 | 4,145 | -0.12% | 21,300 | 251億601万 | -1.12% |
| 10/03 | 4,140 | 4,180 | 4,140 | 4,150 | +0.24% | 22,900 | 251億3629万 | -1.17% |
| 10/02 | 4,140 | 4,145 | 4,135 | 4,140 | 0% | 28,000 | 250億7572万 | -1.5% |
| 10/01 | 4,145 | 4,155 | 4,135 | 4,140 | 0% | 32,000 | 250億7572万 | -1.57% |
| 09/30 | 4,160 | 4,160 | 4,135 | 4,140 | 0% | 30,600 | 250億7572万 | -1.62% |
| 09/29 | 4,160 | 4,160 | 4,115 | 4,140 | -1.19% | 65,700 | 250億7572万 | -1.69% |
| 09/26 | (IR情報)16:00 基準日の取消しに関するお知らせ |
| 09/26 | 4,210 | 4,240 | 4,190 | 4,190 | -1.06% | 8,300 | 253億7857万 | -0.5% |
| 09/24 | (IR情報)16:00 当社株券等に対する公開買付けに関するお知らせ |
| 09/24 | (IR情報)16:00 (変更)「その他の関係会社である豊田合成株式会社による当社株券等に対する公開買付けに関する賛同の意見表明及び応募推奨のお知らせ」の変更に関するお知らせ |