Northrop Grumman Corporation NOC

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Northrop Grumman Corporation Common Stock · Company · NYSE

Announcement types: (default: consequential filings)
Results & current reports
Capital markets
Ownership & governance

USD closing-price chart (daily close from yfinance · Last year)

USD 563.79 → 525.28 · -6.8%
768.020632.020496.020 1,2 3 4,5 6 7,8 9 10 11,12,13 14 15 16,17 Jul 25Oct 25Jan 26Apr 26Jul 26

Numbered dotted lines mark the filtered filings under Announcement Events below.

Price & SEC Filing History 22 Jul 2025 — 23 Jul 2026 (Last year)

Daily NYSE prices are sourced from yfinance. Yellow highlighting marks an intraday rise or a gap up between adjacent trading sessions. SEC acceptance times are converted to US Eastern time: pre-market filings appear below that day’s OHLCV row; filings accepted after the 09:30 ET open appear above it. The SEC does not publish an exact first-public-availability timestamp, so acceptance time is the best available proxy.

No data yet
523.0900 535.6400 518.4650 525.2800 866,973
17 · 10-Q After-hours · 16:02 ET 10-Q ↗
490.0000 514.1400 479.0200 512.2900 2,447,000
16 · 8-K Pre-market · 06:45 ET 8-K ↗
523.4800 533.0700 522.7500 523.9600 1,032,000
Weekend
Weekend
525.0700 538.9600 520.6600 521.5700 1,047,500
525.8100 529.4400 517.1600 518.6500 1,270,200
531.8800 535.9200 524.8700 525.2200 824,500
536.8800 544.1100 527.9400 528.6700 773,500
540.5200 545.5400 536.8500 541.8200 633,600
Weekend
Weekend
534.6700 541.0800 529.9400 539.6300 455,700
537.5500 539.6500 528.0200 532.2300 938,000
546.0400 548.1500 539.0000 545.1100 955,400
551.0400 552.6300 544.2800 549.0400 702,800
547.0000 548.5100 537.3700 547.7500 917,800
Weekend
Weekend
No trading
527.8900 549.0100 527.8900 549.0100 1,741,600
514.4400 525.3100 511.0800 519.9500 902,800
499.7600 509.5700 495.1000 509.3100 1,293,300
502.0000 503.8100 493.8400 496.0200 1,149,300
Weekend
Weekend
501.7500 507.2800 498.1300 500.0300 1,584,100
501.0000 512.4400 498.7500 499.3300 774,800
515.1400 517.1300 502.7700 503.0100 1,222,600
519.0700 519.6300 509.4800 513.2200 790,800
515.5900 516.0700 503.6800 507.3300 1,123,000
Weekend
Weekend
No trading
552.1400 553.5000 515.3800 521.5000 2,402,900
549.0000 558.8000 544.3500 550.1500 709,400
545.9000 554.2000 544.3500 551.2100 741,200
542.3500 546.0700 536.7400 544.7300 1,073,300
Weekend
Weekend
553.0000 554.0600 546.9900 550.3300 800,700
543.8700 559.7000 541.3800 552.5200 896,900
552.9000 552.9200 541.0000 542.1400 751,200
538.3500 548.7500 537.4400 548.6700 968,200
542.0300 546.8600 531.5000 540.8100 1,033,200
Weekend
Weekend
550.0000 551.9600 540.1700 544.4000 1,069,700
532.5000 545.4300 531.3300 545.1700 1,014,300
533.5400 538.4300 525.7300 526.0600 1,220,500
535.1700 538.4300 531.8000 536.5900 1,333,400
559.9300 559.9300 538.6200 539.2200 1,321,700
Weekend
Weekend
561.3100 563.9300 551.0300 563.6800 1,975,500
552.2600 560.5500 551.3400 559.2900 1,059,200
552.3500 555.4900 548.5500 551.3400 520,700
557.7300 558.9900 550.3400 556.8000 606,900
No trading
Weekend
Weekend
552.5400 557.6900 550.4900 555.5800 652,000
15 · 8-K After-hours · 17:02 ET 8-K ↗
553.6200 555.9600 546.7600 551.5800 799,100
556.0600 556.0600 547.5700 552.1700 966,000
552.9500 557.0900 550.0800 556.3400 829,500
540.0000 552.7500 539.0000 550.0000 1,286,200
Weekend
Weekend
548.7200 552.8000 539.1400 540.6900 648,900
553.5400 555.9700 547.2900 548.6500 524,600
14 · DEFA14A After-hours · 16:31 ET DEFA14A ↗
554.3500 554.3500 544.1000 551.8000 568,100
550.0000 559.4600 546.5700 558.3000 684,900
546.0000 554.2500 544.1200 548.2100 667,400
Weekend
Weekend
554.9700 555.0300 544.2400 549.5200 742,700
559.2300 561.3200 548.3000 552.2700 841,500
558.9700 560.6200 551.2500 559.6000 772,400
570.0500 570.5000 553.4100 558.6000 923,300
567.3100 577.5000 565.1900 567.0000 708,100
Weekend
Weekend
578.7500 580.8600 568.0900 568.1400 647,100
574.1400 580.7400 573.2500 579.4800 649,600
578.0000 582.1300 567.3300 572.4100 683,900
581.9600 582.9900 570.6600 577.8200 585,900
577.0000 588.2600 569.5600 575.2800 932,200
Weekend
Weekend
582.3200 582.7800 569.0000 575.1100 1,041,200
592.5700 596.5000 583.2300 587.6600 1,386,800
611.1000 615.0000 583.5000 589.6200 1,304,900
13 · S-3ASR After-hours · 17:06 ET S-3ASR ↗ 12 · 10-Q After-hours · 16:03 ET 10-Q ↗
640.0000 653.0000 610.3900 611.1300 1,632,000
11 · 8-K Pre-market · 06:44 ET 8-K ↗
667.0000 673.3400 653.3600 656.9800 787,900
Weekend
Weekend
671.0200 677.7500 663.0200 665.2600 745,100
679.1000 680.4100 669.9000 672.7700 670,300
680.6600 682.8800 676.0000 678.5900 547,300
678.4600 681.6800 674.5500 680.1300 535,100
677.7200 683.8700 677.0100 681.3100 515,900
Weekend
Weekend
685.3400 687.0000 665.0000 673.7300 499,800
689.7000 698.5300 685.0000 690.5700 777,200
677.4700 690.7900 673.5000 687.4700 1,300,700
690.1400 696.7900 686.3900 690.5000 608,500
701.0000 703.0600 687.9500 695.7900 792,500
Weekend
Weekend
10 · DEF 14A After-hours · 16:05 ET DEF 14A ↗
No trading
700.7000 708.5500 698.1900 702.5000 613,000
689.3400 702.1800 684.7500 697.0000 551,300
679.8600 685.5200 667.2800 682.2400 551,200
689.0400 693.0100 663.9300 671.5900 927,300
Weekend
Weekend
692.2600 693.8500 677.9600 679.0000 581,800
689.6500 696.9300 687.4800 691.9900 543,100
685.4800 692.7900 681.8000 691.2100 579,500
670.0000 689.2900 668.2000 682.1600 730,600
705.8500 706.7300 678.7500 680.0000 1,225,900
Weekend
Weekend
714.7200 717.3400 701.0000 706.9500 1,718,000
719.0800 728.0000 707.0100 714.1500 849,700
729.9900 731.1800 720.0000 724.8400 545,500
734.4400 736.8700 720.8000 724.0300 764,400
733.5300 737.4000 726.1700 735.9600 604,600
Weekend
Weekend
739.9500 746.8900 728.3400 733.7100 481,900
736.4400 746.1800 726.5800 736.3000 753,200
730.7400 742.1000 728.5700 733.1800 622,200
738.0000 744.9700 730.1900 734.9800 642,000
763.0000 765.5800 744.5700 747.3400 910,400
Weekend
Weekend
742.2700 758.6800 738.0100 756.1300 772,900
749.6400 751.9400 734.3600 740.0100 918,800
757.5000 758.2800 737.7500 753.8400 1,205,100
768.8500 774.0000 751.8700 759.1100 1,304,800
745.0000 768.2200 739.8100 768.0200 1,474,400
Weekend
Weekend
720.0000 727.2900 714.8100 724.3800 896,400
703.0000 713.8100 700.1700 710.9000 588,000
727.4000 728.5000 691.0300 703.6500 1,634,900
726.5600 734.5800 710.4700 727.7300 735,000
721.2600 731.4500 719.4200 725.3900 567,200
Weekend
Weekend
735.0000 737.7500 718.0100 723.5600 744,100
727.2600 745.5500 727.2600 736.8700 1,008,400
709.9700 725.5500 702.4900 724.8300 1,194,600
702.5600 708.0000 698.7300 701.1200 614,500
No trading
Weekend
Weekend
9 · 8-K After-hours · 16:24 ET 8-K ↗
696.8000 709.0000 696.2600 702.5700 676,200
680.7500 696.7200 679.9200 695.0600 887,400
682.3400 688.1100 674.7500 678.8300 865,000
702.3200 702.3200 684.3700 685.0000 956,100
712.1500 715.6100 698.0000 698.0200 693,900
Weekend
Weekend
702.0000 711.8800 699.5300 709.1100 634,800
680.2500 704.1800 679.0000 696.5000 845,300
705.7500 709.3900 677.3900 689.7500 1,732,000
694.2000 707.6600 685.5000 704.9800 942,500
685.0000 690.4700 675.4000 685.0200 1,180,100
Weekend
Weekend
688.0000 697.6700 681.1000 692.2600 953,100
695.4500 705.4500 686.0500 695.3500 1,064,200
674.4600 690.7400 664.0000 689.1300 1,222,400
8 · 10-K After-hours · 16:02 ET 10-K ↗
649.6500 683.0100 636.0000 678.7400 1,363,400
7 · 8-K Pre-market · 06:44 ET 8-K ↗
670.0000 671.4500 659.1100 660.9700 1,024,600
Weekend
Weekend
674.2000 677.3000 668.5100 672.9500 597,600
661.1800 671.1000 660.0000 670.4400 601,900
658.9700 669.6300 654.6600 664.1600 1,011,100
665.9300 674.7500 653.0200 657.3000 1,000,500
No trading
Weekend
Weekend
657.6000 669.6800 657.2600 666.9000 968,900
640.3700 658.4100 632.9800 654.6100 965,600
625.0000 654.5200 624.8600 653.1400 1,480,900
639.1600 639.7900 619.6800 625.5000 1,153,800
623.6300 635.7600 623.3800 629.3200 1,262,600
Weekend
Weekend
590.6800 619.7900 590.6800 618.8200 1,449,800
617.8800 638.8400 585.9500 590.7900 3,608,000
616.4200 617.9900 574.5100 577.0100 1,674,500
614.5600 619.2000 606.8200 610.6100 997,900
593.9600 611.3700 591.2000 611.3200 941,700
Weekend
Weekend
569.5900 585.8500 564.5000 585.6600 477,400
No trading
575.2100 577.0000 570.0200 570.2100 419,600
578.8900 580.1200 574.3100 574.5700 526,200
577.9200 580.7600 576.8800 577.7800 250,000
Weekend
Weekend
582.7100 582.7100 575.4500 577.3700 230,400
No trading
581.2300 587.2900 581.1400 582.3500 202,600
585.2800 586.0000 576.7000 580.0600 564,700
568.9000 585.2800 568.9000 584.6600 530,100
Weekend
Weekend
558.4700 570.9600 557.9800 568.4600 1,329,800
564.0000 569.9300 558.0600 559.5200 950,200
562.7900 572.3000 557.5900 564.1900 761,800
573.5000 574.2000 565.8400 568.7200 488,200
569.1400 575.7900 568.5700 575.7900 448,800
Weekend
Weekend
563.1900 571.6000 560.5000 569.7600 784,400
557.5600 568.6600 556.9300 560.0400 618,200
549.0000 558.6100 546.5200 555.3600 680,000
554.1200 557.7400 550.2500 550.6300 410,900
549.0000 553.6200 546.5100 553.5600 706,000
Weekend
Weekend
551.5000 552.2800 544.1600 548.9700 785,500
552.8400 560.0000 551.5600 553.0000 753,000
549.5600 554.5200 546.4900 553.3200 890,000
546.6800 551.2800 545.1700 546.9700 779,300
567.7300 568.5000 543.6600 545.5100 794,700
Weekend
Weekend
567.3500 573.6800 566.6300 572.2500 421,800
No trading
569.6100 582.6000 567.0800 567.1100 445,800
565.7000 574.5000 565.7000 569.4200 919,500
562.9200 566.2700 560.0000 565.5600 731,700
Weekend
Weekend
568.2800 571.6700 563.0800 566.7000 943,900
570.8800 573.2600 563.5100 567.3500 688,100
560.3900 567.2000 557.4600 565.0000 665,400
565.0000 573.3100 564.1800 566.7600 1,047,000
559.9800 563.0800 556.2900 563.0300 912,800
Weekend
Weekend
557.7500 562.0300 553.3700 558.0000 742,500
563.2400 563.4100 556.8400 558.0000 828,400
565.1800 569.1500 558.4000 558.5700 669,600
564.4800 570.7900 559.0000 566.7400 743,300
564.8000 567.0600 557.3900 562.9800 1,075,600
Weekend
Weekend
571.9700 571.9700 562.4400 568.6100 646,000
6 · 8-K After-hours · 17:04 ET 8-K ↗
570.0000 578.0400 569.9500 571.9600 610,700
572.7700 579.5300 569.7400 570.5000 535,800
574.4900 579.5900 568.4000 577.1400 494,200
580.4400 581.1900 571.6800 575.4100 657,800
Weekend
Weekend
579.1500 586.6300 575.8200 583.4500 840,200
585.9400 591.7300 577.7400 578.6000 1,102,800
590.0000 594.2200 582.5100 584.9900 723,200
594.5000 598.9500 591.2400 595.0500 714,700
604.8700 605.6500 595.0000 595.9500 501,200
Weekend
Weekend
606.3500 608.5000 597.0800 605.5800 564,700
599.7300 609.8200 598.0100 605.7400 655,500
597.0700 605.9600 595.6500 596.4800 1,122,800
5 · 10-Q After-hours · 16:04 ET 10-Q ↗
589.9600 604.8900 571.3600 599.3500 1,750,700
4 · 8-K Pre-market · 06:29 ET 8-K ↗
599.6600 602.9000 596.2100 602.0000 1,084,100
Weekend
Weekend
597.0000 601.6500 591.6800 594.5000 825,200
611.0000 611.8000 597.6000 598.9800 781,900
625.0500 627.0500 600.0800 608.9300 666,700
619.4800 627.4100 618.0700 626.9300 437,500
619.9700 624.0500 616.9000 618.8800 452,600
Weekend
Weekend
633.3600 635.2500 619.4100 623.4900 659,700
638.0000 640.9000 631.3700 635.0100 1,007,400
630.0000 638.5400 625.5500 637.9500 938,800
622.8500 627.8100 618.4000 621.6300 838,200
609.1200 619.7100 609.0000 618.5200 540,200
Weekend
Weekend
607.0000 610.6400 605.3000 609.5400 435,900
603.8000 607.2600 601.9600 605.0100 453,900
607.2200 610.8500 603.0100 605.4200 558,300
593.1000 610.1200 593.1000 609.3200 802,800
598.3100 604.1300 591.5100 593.9900 777,100
Weekend
Weekend
589.4900 594.9600 586.8500 594.5200 510,900
590.0000 593.7500 582.4900 585.7700 1,073,900
580.6400 589.6000 577.0000 586.2700 784,200
576.0000 580.6700 571.0800 577.0800 656,300
573.6900 577.6500 570.2600 576.1500 566,700
Weekend
Weekend
571.9100 576.1500 565.5000 573.0300 1,478,200
572.0000 576.9800 568.3200 573.7500 798,900
579.1000 585.0000 576.3900 577.0800 790,200
578.0000 587.2400 575.9500 579.3600 1,104,500
574.0000 576.4700 571.1200 574.5400 804,600
Weekend
Weekend
582.3400 583.1300 575.1800 575.9600 717,900
579.3100 585.7600 578.0000 582.9500 901,100
571.2400 580.8400 570.0000 579.8700 547,300
580.4600 580.4900 571.4400 571.6300 482,500
574.9900 582.1300 571.3700 581.9000 814,100
Weekend
Weekend
579.3400 581.1700 574.8200 580.8000 633,600
581.7100 581.9400 576.0000 579.7600 505,500
586.5300 588.0000 577.6900 581.0100 463,200
3 · 8-K After-hours · 16:05 ET 8-K ↗
591.8800 596.1600 585.2600 589.3200 635,600
No trading
Weekend
Weekend
587.9000 591.5700 587.0800 590.0400 528,600
586.6100 587.9400 580.9000 587.9000 479,100
594.5500 594.5500 585.0400 586.6100 679,300
588.3900 595.8500 588.1200 593.0200 1,002,100
592.0000 595.4000 586.0500 586.7400 478,100
Weekend
Weekend
599.7900 600.9900 591.3700 592.4400 616,600
593.0000 598.8300 591.3100 597.2100 610,200
589.8400 595.3200 587.7700 592.5400 610,400
584.0000 589.4800 582.2200 586.2300 470,700
587.4700 592.2300 583.5400 584.8200 922,300
Weekend
Weekend
583.4100 586.7500 580.9200 583.9600 667,300
583.8900 585.2900 580.9300 583.7200 543,300
582.4900 586.8900 576.2200 582.0900 745,600
579.2100 581.6300 577.6200 580.8000 643,800
579.8100 583.7800 575.4500 580.2400 744,700
Weekend
Weekend
587.7100 591.0700 579.1500 581.1100 749,400
583.2100 588.2300 580.0000 587.3800 626,600
590.0000 593.4800 586.7000 589.2900 992,400
590.2200 594.6800 586.0100 589.9500 905,700
585.6900 592.1600 584.1300 589.7500 970,300
Weekend
Weekend
577.1400 587.8800 572.9500 586.4400 1,006,400
572.0000 577.3800 568.8900 576.6100 850,700
572.9400 573.8100 568.7100 572.8100 661,500
571.4000 573.3000 568.1900 573.2200 682,800
569.2400 570.0000 563.6400 568.6200 679,600
Weekend
Weekend
568.0000 570.1600 563.3000 569.7400 635,700
568.2500 576.8600 566.5800 568.4800 974,800
562.3500 568.6700 551.8000 568.5000 1,250,900
2 · 10-Q After-hours · 16:02 ET 10-Q ↗
536.0100 567.1200 535.5200 563.7900 2,395,100
1 · 8-K Pre-market · 06:45 ET 8-K ↗

Announcement Events

Each title opens the filing on the SEC website. Registered users can summarise the filing and up to seven relevant exhibits linked within the same SEC submission.

17 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:02 ET Summarise
16 8-K 8-K (opens SEC filing in a new tab) Pre-market · 06:45 ET Summarise
15 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:02 ET Summarise
14 DEFA14A DEFA14A (opens SEC filing in a new tab) After-hours · 16:31 ET Summarise
13 S-3ASR S-3ASR (opens SEC filing in a new tab) After-hours · 17:06 ET Summarise
12 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:03 ET Summarise
11 8-K 8-K (opens SEC filing in a new tab) Pre-market · 06:44 ET Summarise
10 DEF 14A DEF 14A (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
9 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:24 ET Summarise
8 10-K 10-K (opens SEC filing in a new tab) After-hours · 16:02 ET Summarise
7 8-K 8-K (opens SEC filing in a new tab) Pre-market · 06:44 ET Summarise
6 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:04 ET Summarise
5 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:04 ET Summarise
4 8-K 8-K (opens SEC filing in a new tab) Pre-market · 06:29 ET Summarise
3 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
2 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:02 ET Summarise
1 8-K 8-K (opens SEC filing in a new tab) Pre-market · 06:45 ET Summarise